diff --git a/Mage.Sets/src/mage/cards/s/SelvalaHeartOfTheWilds.java b/Mage.Sets/src/mage/cards/s/SelvalaHeartOfTheWilds.java
index 6546b7956af..53f776fdb4c 100644
--- a/Mage.Sets/src/mage/cards/s/SelvalaHeartOfTheWilds.java
+++ b/Mage.Sets/src/mage/cards/s/SelvalaHeartOfTheWilds.java
@@ -31,7 +31,6 @@ import java.util.UUID;
 import mage.MageInt;
 import mage.abilities.Ability;
 import mage.abilities.common.EntersBattlefieldAllTriggeredAbility;
-import mage.abilities.common.SimpleActivatedAbility;
 import mage.abilities.costs.common.TapSourceCost;
 import mage.abilities.costs.mana.ManaCostsImpl;
 import mage.abilities.dynamicvalue.DynamicValue;
@@ -39,6 +38,8 @@ import mage.abilities.dynamicvalue.common.GreatestPowerAmongControlledCreaturesV
 import mage.abilities.effects.Effect;
 import mage.abilities.effects.OneShotEffect;
 import mage.abilities.effects.common.AddManaInAnyCombinationEffect;
+import mage.abilities.effects.common.ManaEffect;
+import mage.abilities.mana.SimpleManaAbility;
 import mage.cards.CardImpl;
 import mage.cards.CardSetInfo;
 import mage.constants.*;
@@ -77,8 +78,8 @@ public class SelvalaHeartOfTheWilds extends CardImpl {
         this.addAbility(new EntersBattlefieldAllTriggeredAbility(Zone.BATTLEFIELD, new SelvalaHeartOfTheWildsEffect(), filter, false, SetTargetPointer.PERMANENT, rule));
 
         // {G}, {T}: Add X mana in any combination of colors to your mana pool, where X is the greatest power among creatures you control.
-        Effect effect = new AddManaInAnyCombinationEffect(new GreatestPowerAmongControlledCreaturesValue(), rule2, ColoredManaSymbol.B, ColoredManaSymbol.U, ColoredManaSymbol.R, ColoredManaSymbol.W, ColoredManaSymbol.G);
-        Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, effect, new ManaCostsImpl("{G}"));
+        ManaEffect manaEffect = new AddManaInAnyCombinationEffect(new GreatestPowerAmongControlledCreaturesValue(), rule2, ColoredManaSymbol.B, ColoredManaSymbol.U, ColoredManaSymbol.R, ColoredManaSymbol.W, ColoredManaSymbol.G);
+        Ability ability = new SimpleManaAbility(Zone.BATTLEFIELD, manaEffect, new ManaCostsImpl("{G}"));
         ability.addCost(new TapSourceCost());
         this.addAbility(ability);