diff --git a/forge-ai/src/main/java/forge/ai/ComputerUtil.java b/forge-ai/src/main/java/forge/ai/ComputerUtil.java
index b8afd4a4b16..bd0c2704273 100644
--- a/forge-ai/src/main/java/forge/ai/ComputerUtil.java
+++ b/forge-ai/src/main/java/forge/ai/ComputerUtil.java
@@ -2879,7 +2879,7 @@ public class ComputerUtil {
             // no life gain is not negative
             return false;
         } else if (Iterables.any(list, CardTraitPredicates.hasParam("AiLogic", "LoseLife"))) {
-            // lose life is only negagive is the player can lose life
+            // lose life is only negative is the player can lose life
             return player.canLoseLife();
         } else if (Iterables.any(list, CardTraitPredicates.hasParam("AiLogic", "LichDraw"))) {
             // if it would draw more cards than player has, then its negative
diff --git a/forge-ai/src/main/java/forge/ai/ComputerUtilCombat.java b/forge-ai/src/main/java/forge/ai/ComputerUtilCombat.java
index c97cde6b481..f104541572e 100644
--- a/forge-ai/src/main/java/forge/ai/ComputerUtilCombat.java
+++ b/forge-ai/src/main/java/forge/ai/ComputerUtilCombat.java
@@ -2375,7 +2375,6 @@ public class ComputerUtilCombat {
         repParams.put(AbilityKey.DamageSource, attacker);
         repParams.put(AbilityKey.DamageAmount, damage);
         repParams.put(AbilityKey.IsCombat, true);
-        repParams.put(AbilityKey.Prevention, true);
 
         List<ReplacementEffect> list = game.getReplacementHandler().getReplacementList(
                 ReplacementType.DamageDone, repParams, ReplacementLayer.Other);
diff --git a/forge-game/src/main/java/forge/game/ability/AbilityKey.java b/forge-game/src/main/java/forge/game/ability/AbilityKey.java
index e3e5dd7db83..1a36cbe44b6 100644
--- a/forge-game/src/main/java/forge/game/ability/AbilityKey.java
+++ b/forge-game/src/main/java/forge/game/ability/AbilityKey.java
@@ -41,7 +41,6 @@ public enum AbilityKey {
     CounteredSA("CounteredSA"),
     CounterNum("CounterNum"),
     CounterMap("CounterMap"),
-    CounterTable("CounterTable"),
     CounterType("CounterType"),
     Crew("Crew"),
     CumulativeUpkeepPaid("CumulativeUpkeepPaid"),
@@ -103,8 +102,6 @@ public enum AbilityKey {
     Phase("Phase"),
     Player("Player"),
     PreventedAmount("PreventedAmount"),
-    PreventMap("PreventMap"),
-    Prevention("Prevention"),
     Produced("Produced"),
     Regeneration("Regeneration"),
     ReplacementEffect("ReplacementEffect"),
diff --git a/forge-game/src/main/java/forge/game/replacement/ReplacementHandler.java b/forge-game/src/main/java/forge/game/replacement/ReplacementHandler.java
index dd52d246a09..10187567ef5 100644
--- a/forge-game/src/main/java/forge/game/replacement/ReplacementHandler.java
+++ b/forge-game/src/main/java/forge/game/replacement/ReplacementHandler.java
@@ -175,7 +175,6 @@ public class ReplacementHandler {
                 final Card c = preList.get(crd);
 
                 for (final ReplacementEffect replacementEffect : c.getReplacementEffects()) {
-
                     // Use "CheckLKIZone" parameter to test for effects that care abut where the card was last (e.g. Kalitas, Traitor of Ghet
                     // getting hit by mass removal should still produce tokens).
                     Zone cardZone = "True".equals(replacementEffect.getParam("CheckSelfLKIZone")) ? game.getChangeZoneLKIInfo(c).getLastKnownZone() : game.getZoneOf(c);