diff --git a/battle/attack/AtkModelEnemy.java b/battle/attack/AtkModelEnemy.java
index 46de6fe1..d81bd4b9 100755
--- a/battle/attack/AtkModelEnemy.java
+++ b/battle/attack/AtkModelEnemy.java
@@ -19,7 +19,7 @@ public class AtkModelEnemy extends AtkModelEntity {
 	protected AtkModelEnemy(EEnemy ent, float d0) {
 		super(ent, d0, 1);
 		String[] arr = { "KB", "STOP", "SLOW", "WEAK", "WARP", "CURSE", "SNIPER", "SEAL", "POISON", "BOSS",
-				"POIATK", "ARMOR", "SPEED", "DMGCUT", "DMGCAP" };
+				"POIATK", "ARMOR", "BONECRUSH", "SPEED", "DMGCUT", "DMGCAP" };
 		cursed = new Proc[data.getAtkCount()];
 		for (int i = 0; i < cursed.length; i++) {
 			cursed[i] = data.getAtkModel(i).getProc().clone();
diff --git a/battle/attack/AtkModelEntity.java b/battle/attack/AtkModelEntity.java
index 3dff5a32..793c70d5 100755
--- a/battle/attack/AtkModelEntity.java
+++ b/battle/attack/AtkModelEntity.java
@@ -280,7 +280,7 @@ protected void setProc(int ind, Proc proc) {
 		String[] par = {
 				"CRIT", "WAVE", "KB", "WARP", "STOP", "SLOW", "WEAK", "POISON", "MOVEWAVE", "CURSE", "SNIPER",
 				"BOSS", "SEAL", "BREAK", "SUMMON", "SATK", "POIATK", "VOLC", "ARMOR", "SPEED", "MINIWAVE", "SHIELDBREAK",
-				"MINIVOLC", "METALKILL", "BLAST"
+				"MINIVOLC", "METALKILL", "BLAST", "BONECRUSH"
 		};
 
 		for (String s0 : par)
diff --git a/battle/attack/AttackAb.java b/battle/attack/AttackAb.java
index 3e5b49d7..5027dc55 100755
--- a/battle/attack/AttackAb.java
+++ b/battle/attack/AttackAb.java
@@ -187,6 +187,14 @@ protected void process() {
 					else
 						proc.ARMOR.time *= (100 - imus.IMUARMOR.block) / 100.0;
 				}
+				if (proc.BONECRUSH.time > 0 && imus.IMUBONE.block != 0 && checkAIImmunity(proc.BONECRUSH.mult, imus.IMUBONE.smartImu, imus.IMUBONE.block < 0)) {
+					if (imus.IMUBONE.block > 0)
+						blocked = true;
+					if (imus.IMUBONE.block == 100)
+						proc.BONECRUSH.clear();
+					else
+						proc.BONECRUSH.time *= (100 - imus.IMUBONE.block) / 100.0;
+				}
 				if (proc.SPEED.time > 0 && imus.IMUSPEED.block != 0) {
 					boolean b;
 					if (proc.SPEED.type != 2)
diff --git a/battle/attack/ContVolcano.java b/battle/attack/ContVolcano.java
index 7d06ddb0..4acf6849 100644
--- a/battle/attack/ContVolcano.java
+++ b/battle/attack/ContVolcano.java
@@ -153,7 +153,7 @@ private void updateProc() {
 				}
 			performed[1] = performed[3] = true;
 		}
-		String[] cursep = {"KB", "STOP", "SLOW", "WEAK", "WARP", "CURSE", "SNIPER", "SEAL", "POISON", "BOSS", "POIATK", "ARMOR", "SPEED", "DMGCUT", "DMGCAP"};
+		String[] cursep = {"KB", "STOP", "SLOW", "WEAK", "WARP", "CURSE", "SNIPER", "SEAL", "POISON", "BOSS", "POIATK", "ARMOR", "SPEED", "DMGCUT", "DMGCAP", "BONECRUSH"};
 		if (v.attacker.status[P_CURSE][0] > 0 || v.attacker.status[P_SEAL][0] > 0 && performed[2]) {
 			performed[2] = false;
 			for (String s : cursep)
diff --git a/battle/entity/Entity.java b/battle/entity/Entity.java
index 34b40ef7..5f7d5dfe 100755
--- a/battle/entity/Entity.java
+++ b/battle/entity/Entity.java
@@ -414,6 +414,11 @@ public void getEff(int t) {
 				EffAnim<GuardEff> eff = effas().A_E_GUARD;
 				effs[id] = eff.getEAnim(GuardEff.BREAK);
 				CommonStatic.setSE(SE_BARRIER_ABI);
+			} else if (t == P_BONECRUSH) {
+				int id = A_BONECRUSH;
+				EffAnim<BoneEff> eff = effas().A_BONECRUSH;
+				BoneEff index = status[P_BONECRUSH][1] >= 0 ? BoneEff.DEBUFF : BoneEff.BUFF;
+				effs[id] = eff.getEAnim(index);
 			}
 		}
 
@@ -487,6 +492,11 @@ private void checkEff() {
 				effs[id] = null;
 			}
 
+			if (status[P_BONECRUSH][0] == 0) {
+				byte id = A_BONECRUSH;
+				effs[id] = null;
+			}
+
 			if (status[P_SPEED][0] == 0) {
 				byte id = dire == -1 ? A_SPEED : A_E_SPEED;
 				effs[id] = null;
@@ -2014,6 +2024,20 @@ private void processProcs(AttackAb atk) {
 				anim.getEff(INV);
 		}
 
+		if (!isBase && atk.getProc().BONECRUSH.time > 0) {
+			int res = checkAIImmunity(atk.getProc().BONECRUSH.mult, getProc().IMUBONE.smartImu, getProc().IMUBONE.mult < 0) ? getProc().IMUBONE.mult : 0;
+
+			if (res < 100) {
+				int val = (int) (atk.getProc().BONECRUSH.time * time);
+				status[P_BONECRUSH][0] = val * (100 - res) / 100;
+				status[P_BONECRUSH][1] = atk.getProc().BONECRUSH.mult;
+				status[P_BONECRUSH][2] = atk.getProc().BONECRUSH.single ? 1 : 0;
+
+				anim.getEff(P_BONECRUSH);
+			} else
+				anim.getEff(INV);
+		}
+
 		if (atk.getProc().SPEED.time > 0) {
 			int res = getProc().IMUSPEED.mult;
 			int speed = data.getSpeed();
@@ -2131,8 +2155,17 @@ public void postUpdate() {
 		if (status[P_ARMOR][0] > 0) {
 			damage = (long) (damage * (100 + status[P_ARMOR][1]) / 100.0);
 		}
-		if (!isBase && damage > 0 && kbTime <= 0 && kbTime != -1 && (ext <= damage * hb || health < damage))
-			interrupt(INT_HB, KB_DIS[INT_HB]);
+		if (!isBase && damage > 0 && kbTime <= 0 && kbTime != -1 && (ext <= damage * hb || health < damage)) {
+			if (status[P_BONECRUSH][0] > 0) {
+				damage = (long) (damage * (100 + status[P_BONECRUSH][1]) / 100.0);
+				if (status[P_BONECRUSH][2] == 1) {
+					status[P_BONECRUSH][0] = 0;
+				}
+			}
+			if (damage != 0) {
+				interrupt(INT_HB, KB_DIS[INT_HB]);
+			}
+		}
 		if (damage > 0 && isBase && basis.activeGuard == 1) {
 			anim.getEff(GUARD_HOLD);
 		} else {
@@ -2633,6 +2666,8 @@ private void updateProc() {
 			status[P_ARMOR][0]--;
 		if (status[P_SPEED][0] > 0)
 			status[P_SPEED][0]--;
+		if (status[P_BONECRUSH][0] > 0)
+			status[P_BONECRUSH][0]--;
 		if (status[P_BSTHUNT][0] > 0)
 			status[P_BSTHUNT][0]--;
 		// update tokens
diff --git a/util/Data.java b/util/Data.java
index 67b1007d..1f72ae31 100755
--- a/util/Data.java
+++ b/util/Data.java
@@ -34,7 +34,6 @@ public static class ARMOR extends ProcItem {
 			@Order(2)
 			public int mult;
 		}
-
 		@JsonClass(noTag = NoTag.LOAD)
 		public static class BURROW extends ProcItem {
 			@Order(0)
@@ -227,6 +226,8 @@ public ProcItem clear() {
 					for (Field f : fs)
 						if (f.getType() == int.class)
 							f.set(this, 0);
+						else if (f.getType() == boolean.class)
+							f.set(this, false);
 						else if (IntType.class.isAssignableFrom(f.getType()))
 							f.set(this, (f.getType().getDeclaredConstructor().newInstance()));
 						else if (f.getType() == Identifier.class)
@@ -475,6 +476,18 @@ public static class SPEED extends ProcItem {
 			public int type;
 		}
 
+		@JsonClass(noTag = NoTag.LOAD)
+		public static class BONECRUSH extends ProcItem {
+			@Order(0)
+			public int prob;
+			@Order(1)
+			public int time;
+			@Order(2)
+			public int mult;
+			@Order(3)
+			public boolean single;
+		}
+
 		@JsonClass(noTag = NoTag.LOAD)
 		public static class STRONG extends ProcItem {
 			@Order(0)
@@ -883,13 +896,17 @@ public static Proc load(int[][] data) {
 		public final BLAST BLAST = new BLAST();
 		@Order(61)
 		public final IMU IMUBLAST = new IMU();
-		@Order(61)
-		public final MINIVOLC MINIDEATHSURGE = new MINIVOLC(); // TODO: implement this as a normal ability?
 		@Order(62)
-		public final MULT MONEYBACK = new MULT();
+		public final BONECRUSH BONECRUSH = new BONECRUSH();
 		@Order(63)
-		public final MULT CANONCHARGE = new MULT();
+		public final IMUAD IMUBONE = new IMUAD();
 		@Order(64)
+		public final MINIVOLC MINIDEATHSURGE = new MINIVOLC(); // TODO: implement this as a normal ability?
+		@Order(65)
+		public final MULT MONEYBACK = new MULT();
+		@Order(66)
+		public final MULT CANONCHARGE = new MULT();
+		@Order(67)
 		public final PROB IMUATKANY = new PROB();
 
 		@Override
@@ -1265,7 +1282,9 @@ public static Proc genProc(JsonElement elem) {
 	public static final int P_HPREGEN = 59;
 	public static final int P_BLAST = 60;
 	public static final int P_IMUBLAST = 61;
-	public static final byte PROC_TOT = 62;
+	public static final int P_BONECRUSH = 62;
+	public static final int P_IMUBONE = 63;
+	public static final byte PROC_TOT = 64;
 	public static final byte PROC_WIDTH = 6;
 
 	public static final boolean[] procSharable = {
@@ -1330,7 +1349,9 @@ public static Proc genProc(JsonElement elem) {
 			true, //adrenaline
 			true, //hp regen
 			false, //blast
-			true   //imu.blast
+			true,   //imu.blast
+			true,  //mini death surge
+			false   //bone crush
 	};
 
 	/**
@@ -1342,7 +1363,7 @@ public static Proc genProc(JsonElement elem) {
 	 * Procs in this list are removed when an unit is hit and has a barrier or Aku shield active
 	 */
 	public static final byte[] REMOVABLE_PROC = {
-			P_STOP, P_SLOW, P_WEAK, P_CURSE, P_SEAL, P_POISON, P_ARMOR, P_SPEED
+			P_STOP, P_SLOW, P_WEAK, P_CURSE, P_SEAL, P_POISON, P_ARMOR, P_SPEED, P_BONECRUSH
 	};
 
 	public static final byte WT_WAVE = 1;
@@ -1553,8 +1574,9 @@ public static Proc genProc(JsonElement elem) {
 	public static final byte A_DMGCAP = 64;
 	public static final byte A_E_DMGCAP = 65;
 	public static final byte A_E_GREEN_GUARD = 66;
+	public static final byte A_BONECRUSH = 67;
 	public static final byte[] A_POIS = { A_POI0, A_POI1, A_POI2, A_POI3, A_POI4, A_POI5, A_POI6, A_POI7 };
-	public static final byte A_TOT = 67;
+	public static final byte A_TOT = 68;
 
 	// atk type index used in filter page
 	public static final byte ATK_SINGLE = 0;
diff --git a/util/Res.java b/util/Res.java
index da8a4e84..99eda1de 100755
--- a/util/Res.java
+++ b/util/Res.java
@@ -281,6 +281,8 @@ private static void readAbiIcon() {
 		aux.icon[1][P_SPEED] = new VImg("./org/page/icons/Speed.png");
 		aux.icon[1][P_SPEEDUP] = new VImg("./org/page/icons/Speed.png");
 		aux.icon[1][P_HPREGEN] = new VImg("./org/page/icons/Barrier.png");
+		aux.icon[1][P_BONECRUSH] = new VImg("./org/page/icons/BoneCrush.png");
+		aux.icon[1][P_IMUBONE] = new VImg("./org/page/icons/BoneCrushX.png");
 		CommonStatic.getConfig().icon = false;
 	}
 
diff --git a/util/lang/AnimTypeLocale.java b/util/lang/AnimTypeLocale.java
index b2f967a7..dce14f25 100644
--- a/util/lang/AnimTypeLocale.java
+++ b/util/lang/AnimTypeLocale.java
@@ -43,6 +43,7 @@ public class AnimTypeLocale {
 		Collections.addAll(TYPES, EffAnim.DmgCap.values());
 		Collections.addAll(TYPES, EffAnim.GuardEff.values());
 		Collections.addAll(TYPES, EffAnim.BlastEff.values());
+		Collections.addAll(TYPES, EffAnim.BoneEff.values());
 	}
 
 	public static void read() {
diff --git a/util/lang/Editors.java b/util/lang/Editors.java
index 2af648c7..84b1b895 100644
--- a/util/lang/Editors.java
+++ b/util/lang/Editors.java
@@ -671,6 +671,8 @@ else if (t.mult == 0)
 
 		map().put("IMUARMOR", imuad);
 
+		map().put("IMUBONE", imuad);
+
 		map().put("IMUSPEED", imuad);
 
 		map().put("BARRIER", new EditControl<>(Proc.BARRIER.class, (t) -> {
@@ -733,6 +735,15 @@ else if (t.mult == 0)
 		map().put("BLAST", new EditControl<>(Proc.BLAST.class, (t) -> {
 			t.prob = Math.max(0, Math.min(100, t.prob));
 		}));
+
+		map().put("BONECRUSH", new EditControl<>(Proc.BONECRUSH.class, (t) -> {
+			t.prob = MathUtil.clip(t.prob, 0, 100);
+			if (t.prob == 0) {
+				t.mult = t.time = 0;
+			} else {
+				t.time = Math.max(1, t.time);
+			}
+		}));
 	}
 
 	private static void setComponentVisibility(EditorGroup egg, boolean boo, int... fields) {
diff --git a/util/lang/assets/animation_type.json b/util/lang/assets/animation_type.json
index ebb76214..e63a69bf 100644
--- a/util/lang/assets/animation_type.json
+++ b/util/lang/assets/animation_type.json
@@ -83,5 +83,9 @@
         "START": "Start",
         "EXPLODE": "Explode",
         "DUMMY": "Dummy"
+    },
+    "BoneEff": {
+        "BUFF": "parry",
+        "DEBUFF": "bonecrush"
     }
 }
\ No newline at end of file
diff --git a/util/lang/assets/proc.json b/util/lang/assets/proc.json
index 513c8da5..0ed6838c 100644
--- a/util/lang/assets/proc.json
+++ b/util/lang/assets/proc.json
@@ -1440,5 +1440,53 @@
                 "tooltip": "Set from 1 to 99 to reduce duration amongst all units. Set to 100 to completely block slow. Set negative to increase the effect."
             }
         }
+    },
+    "BONECRUSH": {
+        "abbr_name": "bone crush",
+        "full_name": "Bone Crush",
+        "tooltip": "Changes damage from attacks that cause hitbacks",
+        "format": "(prob)% chance to inflict [(mult<0){parry}(mult>0){bone crush}], changing damage by (mult)% for (_dispTime(time))[(single){, only triggers once}]",
+        "class": {
+            "prob": {
+                "name": "chance",
+                "tooltip": null
+            },
+            "time": {
+                "name": "duration",
+                "tooltip": ""
+            },
+            "mult": {
+                "name": "percent",
+                "tooltip": "Damage multiplier, -50% means half damage from hb, 100% means double"
+            },
+            "single": {
+                "name": "only trigger once",
+                "tooltip": "When on, the proc is removed after it triggers once"
+            }
+        }
+    },
+    "IMUBONE": {
+        "abbr_name": "Imu. BoneCrush",
+        "full_name": "Immune/Resistant to Bone Crush",
+        "tooltip": null,
+        "format": ["[(mult!=0&block!=100){[(mult==100){Immune}(mult<100&mult>0){Resistant}(mult<0){Weak}] to Bone Crush",
+            "[(mult<100&mult>0){ (_left)Decreases duration by (mult)%(_right)}(mult<0){ (_left)Increases duration by (_abs(mult))%(_right)}]",
+            "[(block!=0&block<100){ & }]}][(block!=0){Bone Crush [(block==100){blocker}(block<100&block>0){absorber}(block<0){increaser}]",
+            "[(block<100&block>0){ (_left)Decreases duration by (block)%(_right)}(block<0){ (_left)Increases duration by (_abs(block))%(_right)}]}]",
+            "[(smartImu!=0){. Only affects [(smartImu>0){bone crush}(smartImu<0){parry}]}]"],
+        "class": {
+            "mult": {
+                "name": "percent",
+                "tooltip": "Set negative to make this unit weak to the effect"
+            },
+            "block": {
+                "name": "Blocker",
+                "tooltip": "Set from 1 to 99 to reduce damage. Set to 100 to completely block bone crush. Set negative to increase the effect."
+            },
+            "smartImu": {
+                "name": "Ignore",
+                "tooltip": "0 = Resist buffs and debuffs, 1 = Only resistant to debuffs, -1 = Only resistant to buffs"
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/util/pack/EffAnim.java b/util/pack/EffAnim.java
index 30bc6776..20595527 100755
--- a/util/pack/EffAnim.java
+++ b/util/pack/EffAnim.java
@@ -31,6 +31,21 @@ public String path() {
 		}
 	}
 
+	public enum BoneEff implements EffType<BoneEff> {
+		BUFF("buff"), DEBUFF("debuff");
+
+		private final String path;
+
+		BoneEff(String str) {
+			path = str;
+		}
+
+		@Override
+		public String path() {
+			return path;
+		}
+	}
+
 	public enum BarrierEff implements EffType<BarrierEff> {
 		BREAK("_breaker"), DESTR("_destruction"), NONE("");
 
@@ -285,6 +300,8 @@ public static class EffAnimStore {
 		public EffAnim<BlastEff> A_BLAST;
 		@Order(81)
 		public EffAnim<BlastEff> A_E_BLAST;
+		@Order(82)
+		public EffAnim<BoneEff> A_BONECRUSH;
 
 		public EffAnim<?>[] values() {
 			Field[] fld = FieldOrder.getDeclaredFields(EffAnimStore.class);
@@ -654,6 +671,13 @@ private static void readCustom(String[] stfs) {
 		effas.A_DMGCAP.rev = true;
 
 		effas.A_E_DMGCAP = new EffAnim<>(dmgcap, vdmgcap, icdmgcap, DmgCap.values());
+
+		String root = "./org/battle/";
+		String bonecrush = root + "bonecrush/bonecrush";
+		VImg vbonecrush = new VImg(bonecrush+".png");
+		ImgCut icbonecrush = ImgCut.newIns(bonecrush+".imgcut");
+		effas.A_BONECRUSH = new EffAnim<>(bonecrush, vbonecrush, icbonecrush, BoneEff.values());
+		effas.A_BONECRUSH.rev = true;
 	}
 
 	private final VImg vimg;