diff --git a/forge-ai/src/main/java/forge/ai/AiCardMemory.java b/forge-ai/src/main/java/forge/ai/AiCardMemory.java
index 208cfb884f3..436c87e6c57 100644
--- a/forge-ai/src/main/java/forge/ai/AiCardMemory.java
+++ b/forge-ai/src/main/java/forge/ai/AiCardMemory.java
@@ -45,6 +45,7 @@ public class AiCardMemory {
     private final Set<Card> memAttachedThisTurn;
     private final Set<Card> memAnimatedThisTurn;
     private final Set<Card> memBouncedThisTurn;
+    private final Set<Card> memActivatedThisTurn;
 
     public AiCardMemory() {
         this.memMandatoryAttackers = new HashSet<>();
@@ -52,6 +53,7 @@ public class AiCardMemory {
         this.memAttachedThisTurn = new HashSet<>();
         this.memAnimatedThisTurn = new HashSet<>();
         this.memBouncedThisTurn = new HashSet<>();
+        this.memActivatedThisTurn = new HashSet<>();
     }
 
     /**
@@ -65,6 +67,7 @@ public class AiCardMemory {
         ATTACHED_THIS_TURN,
         ANIMATED_THIS_TURN,
         BOUNCED_THIS_TURN,
+        ACTIVATED_THIS_TURN,
         //REVEALED_CARDS // stub, not linked to AI code yet
     }
 
@@ -80,6 +83,8 @@ public class AiCardMemory {
                 return memAnimatedThisTurn;
             case BOUNCED_THIS_TURN:
                 return memBouncedThisTurn;
+            case ACTIVATED_THIS_TURN:
+                return memActivatedThisTurn;
             //case REVEALED_CARDS:
             //    return memRevealedCards;
             default:
@@ -253,6 +258,7 @@ public class AiCardMemory {
         clearMemorySet(MemorySet.ATTACHED_THIS_TURN);
         clearMemorySet(MemorySet.ANIMATED_THIS_TURN);
         clearMemorySet(MemorySet.BOUNCED_THIS_TURN);
+        clearMemorySet(MemorySet.ACTIVATED_THIS_TURN);
     }
 
     // Static functions to simplify access to AI card memory of a given AI player.
diff --git a/forge-ai/src/main/java/forge/ai/ComputerUtil.java b/forge-ai/src/main/java/forge/ai/ComputerUtil.java
index f672212113a..30717db2797 100644
--- a/forge-ai/src/main/java/forge/ai/ComputerUtil.java
+++ b/forge-ai/src/main/java/forge/ai/ComputerUtil.java
@@ -1435,20 +1435,28 @@ public class ComputerUtil {
             }
             objects = canBeTargeted;
         }
-        
-        if (saviourApi == ApiType.Pump || saviourApi == ApiType.PumpAll) {
-            toughness = saviour.hasParam("NumDef") ? 
-                    AbilityUtils.calculateAmount(saviour.getHostCard(), saviour.getParam("NumDef"), saviour) : 0;
-            final List<String> keywords = saviour.hasParam("KW") ? 
-                            Arrays.asList(saviour.getParam("KW").split(" & ")) : new ArrayList<String>();
-            if (keywords.contains("Indestructible")) {
-                grantIndestructible = true;
-            }
-            if (keywords.contains("Hexproof") || keywords.contains("Shroud")) {
-                grantShroud = true;
+
+        SpellAbility saviorWithSubs = saviour;
+        while (saviorWithSubs != null) {
+            ApiType curApi = saviorWithSubs.getApi();
+            if (curApi == ApiType.Pump || curApi == ApiType.PumpAll) {
+                toughness = saviorWithSubs.hasParam("NumDef") ?
+                        AbilityUtils.calculateAmount(saviorWithSubs.getHostCard(), saviorWithSubs.getParam("NumDef"), saviour) : 0;
+                final List<String> keywords = saviorWithSubs.hasParam("KW") ?
+                        Arrays.asList(saviorWithSubs.getParam("KW").split(" & ")) : new ArrayList<String>();
+                if (keywords.contains("Indestructible")) {
+                    grantIndestructible = true;
+                }
+                if (keywords.contains("Hexproof") || keywords.contains("Shroud")) {
+                    grantShroud = true;
+                }
+                break;
             }
+            // Consider pump in subabilities, e.g. Bristling Hydra hexproof subability
+            saviorWithSubs = saviorWithSubs.getSubAbility();
+
         }
-        
+
         if (saviourApi == ApiType.PutCounter || saviourApi == ApiType.PutCounterAll) {
             if (saviour.getParam("CounterType").equals("P1P1")) {
                 toughness = AbilityUtils.calculateAmount(saviour.getHostCard(), saviour.getParam("CounterNum"), saviour);
@@ -1588,9 +1596,11 @@ public class ComputerUtil {
         // Destroy => regeneration/bounce/shroud
         else if ((threatApi == ApiType.Destroy || threatApi == ApiType.DestroyAll)
                 && (((saviourApi == ApiType.Regenerate || saviourApi == ApiType.RegenerateAll)
-                        && !topStack.hasParam("NoRegen")) || saviourApi == ApiType.ChangeZone 
+                        && !topStack.hasParam("NoRegen")) || saviourApi == ApiType.ChangeZone
                         || saviourApi == ApiType.Pump || saviourApi == ApiType.PumpAll
-                        || saviourApi == ApiType.Protection || saviourApi == null)) {
+                        || saviourApi == ApiType.Protection || saviourApi == null
+                        || saviorWithSubs.getApi() == ApiType.Pump
+                        || saviorWithSubs.getApi() == ApiType.PumpAll)) {
             for (final Object o : objects) {
                 if (o instanceof Card) {
                     final Card c = (Card) o;
@@ -1604,7 +1614,9 @@ public class ComputerUtil {
                         continue;
                     }
 
-                    if (saviourApi == ApiType.Pump || saviourApi == ApiType.PumpAll) {
+                    if (saviourApi == ApiType.Pump || saviourApi == ApiType.PumpAll
+                            || saviorWithSubs.getApi() == ApiType.Pump
+                            || saviorWithSubs.getApi() == ApiType.PumpAll) {
                         if ((tgt == null && !grantIndestructible)
                                 || (!grantShroud && !grantIndestructible)) {
                             continue;
diff --git a/forge-ai/src/main/java/forge/ai/ability/CountersPutAi.java b/forge-ai/src/main/java/forge/ai/ability/CountersPutAi.java
index 4f1cdad9c15..f08d2cc1d14 100644
--- a/forge-ai/src/main/java/forge/ai/ability/CountersPutAi.java
+++ b/forge-ai/src/main/java/forge/ai/ability/CountersPutAi.java
@@ -249,6 +249,15 @@ public class CountersPutAi extends SpellAbilityAi {
                         return true;
                     }
                 }
+            } else if (sa.getSubAbility() != null
+                        && "Self".equals(sa.getSubAbility().getParam("Defined"))
+                        && sa.getSubAbility().getParamOrDefault("KW", "").contains("Hexproof")
+                        && !AiCardMemory.isRememberedCard(ai, source, AiCardMemory.MemorySet.ANIMATED_THIS_TURN)) {
+                    // Bristling Hydra: save from death using a ping activation
+                    if (ComputerUtil.predictThreatenedObjects(sa.getActivatingPlayer(), sa).contains(source)) {
+                        AiCardMemory.rememberCard(ai, source, AiCardMemory.MemorySet.ACTIVATED_THIS_TURN);
+                        return true;
+                    }
             } else if (ai.getCounters(CounterType.ENERGY) > ComputerUtilCard.getMaxSAEnergyCostOnBattlefield(ai) + sa.getPayCosts().getCostEnergy().convertAmount()) {
                 // outside of combat, this logic only works if the relevant AI profile option is enabled
                 // and if there is enough energy saved