diff --git a/forge-ai/src/main/java/forge/ai/AiProps.java b/forge-ai/src/main/java/forge/ai/AiProps.java
index e90fa5a5866..7d231e0aa3e 100644
--- a/forge-ai/src/main/java/forge/ai/AiProps.java
+++ b/forge-ai/src/main/java/forge/ai/AiProps.java
@@ -30,7 +30,8 @@ public enum AiProps { /** */
     MULLIGAN_THRESHOLD ("5"), /** */
     PLANAR_DIE_ROLL_HESITATION_CHANCE ("10"),
     CHEAT_WITH_MANA_ON_SHUFFLE ("false"),
-    MOVE_EQUIPMENT_TO_BETTER_CREATURES ("always"); /** */
+    MOVE_EQUIPMENT_TO_BETTER_CREATURES ("from_useless_only"),
+    RESERVE_MANA_FOR_MAIN2_CHANCE ("0"); /** */
 
     private final String strDefaultVal;
 
diff --git a/forge-ai/src/main/java/forge/ai/ComputerUtilMana.java b/forge-ai/src/main/java/forge/ai/ComputerUtilMana.java
index 58d9ecf78ed..b297c4410cf 100644
--- a/forge-ai/src/main/java/forge/ai/ComputerUtilMana.java
+++ b/forge-ai/src/main/java/forge/ai/ComputerUtilMana.java
@@ -30,6 +30,7 @@ import forge.game.spellability.AbilityManaPart;
 import forge.game.spellability.AbilitySub;
 import forge.game.spellability.SpellAbility;
 import forge.game.zone.ZoneType;
+import forge.util.MyRandom;
 import forge.util.TextUtil;
 
 import org.apache.commons.lang3.StringUtils;
@@ -661,17 +662,24 @@ public class ComputerUtilMana {
             return false;
         }
 
-        // LowPriorityAI SVar should be set to 'low' elsewhere to indicate that it is a low priority spell ability
+        AiController aic = ((PlayerControllerAi)ai.getController()).getAi();
+        int chanceToReserve = aic.getIntProperty(AiProps.RESERVE_MANA_FOR_MAIN2_CHANCE);
+
+        // If it's a low priority spell (it's explicitly marked so elsewhere in the AI with a SVar), always
+        // obey mana reservations; otherwise, obey mana reservations depending on the "chance to reserve" 
+        // AI profile variable.
         if (sa.getSVar("LowPriorityAI").equals("")) {
-            return false;
+            if (chanceToReserve == 0 || MyRandom.getRandom().nextInt(100) >= chanceToReserve) {
+                return false;
+            }
         }
 
         PhaseType curPhase = ai.getGame().getPhaseHandler().getPhase();
         if (curPhase == PhaseType.MAIN2 || curPhase == PhaseType.CLEANUP) {
-            ((PlayerControllerAi)ai.getController()).getAi().getCardMemory().clearMemorySet(AiCardMemory.MemorySet.HELD_MANA_SOURCES);
+            aic.getCardMemory().clearMemorySet(AiCardMemory.MemorySet.HELD_MANA_SOURCES);
         }
         else {
-            if (((PlayerControllerAi)ai.getController()).getAi().getCardMemory().isRememberedCard(sourceCard, AiCardMemory.MemorySet.HELD_MANA_SOURCES)) {
+            if (aic.getCardMemory().isRememberedCard(sourceCard, AiCardMemory.MemorySet.HELD_MANA_SOURCES)) {
                 // This mana source is held elsewhere for a Main Phase 2 spell.
                 return true;
             }
diff --git a/forge-gui/res/ai/Default.ai b/forge-gui/res/ai/Default.ai
index 8e38572c431..9c32870dcea 100644
--- a/forge-gui/res/ai/Default.ai
+++ b/forge-gui/res/ai/Default.ai
@@ -5,3 +5,5 @@ DEFAULT_PLANAR_DIE_ROLL_CHANCE=50
 MULLIGAN_THRESHOLD=5
 PLANAR_DIE_ROLL_HESITATION_CHANCE=10
 MOVE_EQUIPMENT_TO_BETTER_CREATURES=from_useless_only
+RESERVE_MANA_FOR_MAIN2_CHANCE=0
+
diff --git a/forge-gui/res/ai/Reckless.ai b/forge-gui/res/ai/Reckless.ai
index e342edee2f7..c3055c7b5fa 100644
--- a/forge-gui/res/ai/Reckless.ai
+++ b/forge-gui/res/ai/Reckless.ai
@@ -5,3 +5,4 @@ DEFAULT_PLANAR_DIE_ROLL_CHANCE=100
 MULLIGAN_THRESHOLD=3
 PLANAR_DIE_ROLL_HESITATION_CHANCE=0
 MOVE_EQUIPMENT_TO_BETTER_CREATURES=always
+RESERVE_MANA_FOR_MAIN2_CHANCE=0