[MID] Implemented Geistflame Reservoir

Mage.Sets/src/mage/cards/g/GeistflameReservoir.java

@@ -0,0 +1,64 @@
+package mage.cards.g;
+
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.common.SpellCastControllerTriggeredAbility;
+import mage.abilities.costs.common.RemoveVariableCountersSourceCost;
+import mage.abilities.costs.common.TapSourceCost;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.dynamicvalue.common.GetXValue;
+import mage.abilities.effects.common.DamageTargetEffect;
+import mage.abilities.effects.common.ExileTopXMayPlayUntilEndOfTurnEffect;
+import mage.abilities.effects.common.counter.AddCountersSourceEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.counters.CounterType;
+import mage.filter.StaticFilters;
+import mage.target.common.TargetAnyTarget;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class GeistflameReservoir extends CardImpl {
+
+    public GeistflameReservoir(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{2}{R}");
+
+        // Whenever you cast an instant or sorcery spell, put a charge counter on Geistflame Reservoir.
+        this.addAbility(new SpellCastControllerTriggeredAbility(
+                new AddCountersSourceEffect(CounterType.CHARGE.createInstance()),
+                StaticFilters.FILTER_SPELL_AN_INSTANT_OR_SORCERY, false
+        ));
+
+        // {1}{R}, {T}, Remove any number of charge counters from Geistflame Reservoir: It deals that much damage to any target.
+        Ability ability = new SimpleActivatedAbility(new DamageTargetEffect(GetXValue.instance)
+                .setText("it deals that much damage to any target"), new ManaCostsImpl<>("{1}{R}"));
+        ability.addCost(new TapSourceCost());
+        ability.addCost(new RemoveVariableCountersSourceCost(
+                CounterType.CHARGE.createInstance(), "Remove any number of charge counters from {this}"
+        ));
+        ability.addTarget(new TargetAnyTarget());
+        this.addAbility(ability);
+
+        // {1}{R}, {T}: Exile the top card of your library. You may play that card this turn.
+        ability = new SimpleActivatedAbility(
+                new ExileTopXMayPlayUntilEndOfTurnEffect(1)
+                        .setText("exile the top card of your library. You may play that card this turn"),
+                new ManaCostsImpl<>("{1}{R}")
+        );
+        ability.addCost(new TapSourceCost());
+        this.addAbility(ability);
+    }
+
+    private GeistflameReservoir(final GeistflameReservoir card) {
+        super(card);
+    }
+
+    @Override
+    public GeistflameReservoir copy() {
+        return new GeistflameReservoir(this);
+    }
+}

Mage.Sets/src/mage/sets/InnistradMidnightHunt.java

@@ -80,6 +80,7 @@ public final class InnistradMidnightHunt extends ExpansionSet {
         cards.add(new SetCardInfo("Forest", 276, Rarity.LAND, mage.cards.basiclands.Forest.class, FULL_ART_BFZ_VARIOUS));
         cards.add(new SetCardInfo("Foul Play", 101, Rarity.UNCOMMON, mage.cards.f.FoulPlay.class));
         cards.add(new SetCardInfo("Galvanic Iteration", 224, Rarity.RARE, mage.cards.g.GalvanicIteration.class));
+        cards.add(new SetCardInfo("Geistflame Reservoir", 142, Rarity.RARE, mage.cards.g.GeistflameReservoir.class));
         cards.add(new SetCardInfo("Ghoulcaller's Harvest", 225, Rarity.RARE, mage.cards.g.GhoulcallersHarvest.class));
         cards.add(new SetCardInfo("Grafted Identity", 57, Rarity.RARE, mage.cards.g.GraftedIdentity.class));
         cards.add(new SetCardInfo("Graveyard Glutton", 104, Rarity.RARE, mage.cards.g.GraveyardGlutton.class));

Mage/src/main/java/mage/abilities/costs/common/RemoveVariableCountersSourceCost.java

@@ -62,12 +62,7 @@ public class RemoveVariableCountersSourceCost extends VariableCostImpl {
 
     @Override
     public int getMaxValue(Ability source, Game game) {
-        int maxValue = 0;
         Permanent permanent = game.getPermanent(source.getSourceId());
-        if (permanent != null) {
-            maxValue = permanent.getCounters(game).getCount(counterName);
-        }
-        return maxValue;
+        return permanent != null ? permanent.getCounters(game).getCount(counterName) : 0;
     }
-
 }

Mage/src/main/java/mage/abilities/dynamicvalue/common/GetXValue.java

@@ -1,4 +1,3 @@
-
 package mage.abilities.dynamicvalue.common;
 
 import mage.abilities.Ability;
@@ -15,11 +14,12 @@ public enum GetXValue implements DynamicValue {
 
     @Override
     public int calculate(Game game, Ability sourceAbility, Effect effect) {
-        int amount = 0;
-        for (VariableCost cost : sourceAbility.getCosts().getVariableCosts()) {
-            amount += cost.getAmount();
-        }
-        return amount;
+        return sourceAbility
+                .getCosts()
+                .getVariableCosts()
+                .stream()
+                .mapToInt(VariableCost::getAmount)
+                .sum();
     }
 
     @Override