Remove most "unchecked conversion" errors

Mage.Sets/src/mage/sets/conflux/KnightOfTheReliquary.java

@@ -36,6 +36,7 @@ import mage.constants.Zone;
 import mage.MageInt;
 import mage.abilities.common.SimpleActivatedAbility;
 import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.costs.Cost;
 import mage.abilities.costs.Costs;
 import mage.abilities.costs.CostsImpl;
 import mage.abilities.costs.common.SacrificeTargetCost;
@@ -81,7 +82,7 @@ public class KnightOfTheReliquary extends CardImpl {
 
         // {T}, Sacrifice a Forest or Plains: Search your library for a land card, put it onto the battlefield, then shuffle your library.
         TargetCardInLibrary target = new TargetCardInLibrary(new FilterLandCard());
-        Costs costs = new CostsImpl();
+        Costs<Cost> costs = new CostsImpl<>();
         costs.add(new TapSourceCost());
         costs.add(new SacrificeTargetCost(new TargetControlledPermanent(1, 1, filter, false)));
         this.addAbility(new SimpleActivatedAbility(Zone.BATTLEFIELD, new SearchLibraryPutInPlayEffect(target, false, Outcome.PutLandInPlay), costs));

Mage.Sets/src/mage/sets/fallenempires/Derelor.java

@@ -62,7 +62,7 @@ public class Derelor extends CardImpl {
         this.toughness = new MageInt(4);
 
         // Black spells you cast cost {B} more to cast.
-        this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new SpellsCostIncreasementControllerEffect(filter, new ManaCostsImpl("B"))));
+        this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new SpellsCostIncreasementControllerEffect(filter, new ManaCostsImpl<>("{B}"))));
     }
 
     public Derelor(final Derelor card) {

Mage.Sets/src/mage/sets/khansoftarkir/KinTreeInvocation.java

@@ -102,7 +102,7 @@ class KinTreeInvocationCreateTokenEffect extends OneShotEffect {
         objectColor.setBlack(true);
         objectColor.setGreen(true);
         Token token = new Token("Spirit Warrior", "X/X black and green Spirit Warrior creature token onto the battlefield, where X is the greatest toughness among creatures you control",
-                objectColor, list, value, value, new AbilitiesImpl());
+                objectColor, list, value, value, new AbilitiesImpl<>());
         token.getAbilities().newId(); // neccessary if token has ability like DevourAbility()
         token.putOntoBattlefield(1, game, source.getSourceId(), source.getControllerId());
         return true;

Mage.Sets/src/mage/sets/returntoravnica/StreetSweeper.java

@@ -104,7 +104,7 @@ class StreetSweeperDestroyEffect extends OneShotEffect {
         Permanent permanent = game.getPermanent(source.getFirstTarget());
         if(permanent != null)
         {
-            LinkedList<UUID> attachments = new LinkedList();
+            LinkedList<UUID> attachments = new LinkedList<>();
             attachments.addAll(permanent.getAttachments());
             for(UUID uuid : attachments)
             {

Mage.Sets/src/mage/sets/scarsofmirrodin/TrigonOfMending.java

@@ -45,6 +45,7 @@ import mage.counters.CounterType;
 
 import java.util.UUID;
 import mage.abilities.Ability;
+import mage.abilities.costs.Cost;
 import mage.abilities.costs.mana.GenericManaCost;
 
 /**
@@ -58,7 +59,7 @@ public class TrigonOfMending extends CardImpl {
 
         this.addAbility(new EntersBattlefieldAbility(new AddCountersSourceEffect(CounterType.CHARGE.createInstance(3)), ""));
 
-        Costs costs = new CostsImpl();
+        Costs<Cost> costs = new CostsImpl<>();
         costs.add(new RemoveCountersSourceCost(CounterType.CHARGE.createInstance()));
         costs.add(new TapSourceCost());
         Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new GainLifeEffect(3), costs);

Mage.Sets/src/mage/sets/shardsofalara/OozeGarden.java

@@ -108,7 +108,7 @@ class OozeGardenCreateTokenEffect extends OneShotEffect {
         }
         ArrayList<String> list = new ArrayList<>();
         list.add("Ooze");
-        Token token = new Token("Ooze", "X/X green Ooze creature token onto the battlefield, where X is the sacrificed creature's power", ObjectColor.GREEN, list, value, value, new AbilitiesImpl()) {
+        Token token = new Token("Ooze", "X/X green Ooze creature token onto the battlefield, where X is the sacrificed creature's power", ObjectColor.GREEN, list, value, value, new AbilitiesImpl<>()) {
            
       
         };

Mage.Sets/src/mage/sets/torment/DeepAnalysis.java

@@ -59,7 +59,7 @@ public class DeepAnalysis extends CardImpl {
         this.getSpellAbility().addTarget(new TargetPlayer());
 
         // Flashback-{1}{U}, Pay 3 life.
-        CostsImpl costs = new CostsImpl();
+        Costs<Cost> costs = new CostsImpl<>();
         costs.add(new ManaCostsImpl("{1}{U}"));
         costs.add(new PayLifeCost(3));
         this.addAbility(new FlashbackAbility(costs, TimingRule.SORCERY));

Mage.Sets/src/mage/sets/urzassaga/NoRestForTheWicked.java

@@ -120,12 +120,12 @@ class NoRestForTheWickedWatcher extends Watcher {
 
     public NoRestForTheWickedWatcher() {
         super("NoRestForTheWickedWatcher", WatcherScope.GAME);
-        this.cards = new ArrayList();
+        this.cards = new ArrayList<>();
     }
 
     public NoRestForTheWickedWatcher(final NoRestForTheWickedWatcher watcher) {
         super(watcher);
-        this.cards = new ArrayList();
+        this.cards = new ArrayList<>();
         this.cards.addAll(watcher.cards);
     }
 

Mage.Sets/src/mage/sets/worldwake/PermafrostTrap.java

@@ -34,6 +34,7 @@ import mage.constants.Rarity;
 import mage.ObjectColor;
 import mage.abilities.Ability;
 import mage.abilities.costs.AlternativeCostImpl;
+import mage.abilities.costs.Cost;
 import mage.abilities.costs.mana.ColoredManaCost;
 import mage.abilities.effects.OneShotEffect;
 import mage.abilities.effects.common.DontUntapInControllersNextUntapStepTargetEffect;
@@ -115,7 +116,7 @@ class PermafrostTrapWatcher extends Watcher {
     }
 }
 
-class PermafrostTrapAlternativeCost extends AlternativeCostImpl {
+class PermafrostTrapAlternativeCost extends AlternativeCostImpl<Cost> {
 
     public PermafrostTrapAlternativeCost() {
         super("you may pay {U} rather than pay Permafrost Trap's mana cost");

Mage.Sets/src/mage/sets/worldwake/RicochetTrap.java

@@ -34,6 +34,7 @@ import mage.constants.Rarity;
 import mage.constants.WatcherScope;
 import mage.abilities.Ability;
 import mage.abilities.costs.AlternativeCostImpl;
+import mage.abilities.costs.Cost;
 import mage.abilities.costs.mana.ColoredManaCost;
 import mage.abilities.effects.common.ChooseNewTargetsTargetEffect;
 import mage.cards.CardImpl;
@@ -123,7 +124,7 @@ class RicochetTrapWatcher extends Watcher {
     }
 }
 
-class RicochetTrapAlternativeCost extends AlternativeCostImpl {
+class RicochetTrapAlternativeCost extends AlternativeCostImpl<Cost> {
 
     public RicochetTrapAlternativeCost() {
         super("You may pay {R} rather than pay Ricochet Trap's mana cost");

Mage.Sets/src/mage/sets/worldwake/SlingbowTrap.java

@@ -33,6 +33,7 @@ import mage.constants.CardType;
 import mage.constants.Rarity;
 import mage.abilities.Ability;
 import mage.abilities.costs.AlternativeCostImpl;
+import mage.abilities.costs.Cost;
 import mage.abilities.costs.mana.ManaCostsImpl;
 import mage.abilities.effects.common.DestroyTargetEffect;
 import mage.abilities.keyword.FlyingAbility;
@@ -80,7 +81,7 @@ public class SlingbowTrap extends CardImpl {
     }
 }
 
-class SlingbowTrapAlternativeCost extends AlternativeCostImpl {
+class SlingbowTrapAlternativeCost extends AlternativeCostImpl<Cost> {
 
     public SlingbowTrapAlternativeCost() {
         super("you may pay {G} rather than pay {this}'s mana cost");

Mage.Sets/src/mage/sets/zendikar/CobraTrap.java

@@ -35,6 +35,7 @@ import mage.constants.WatcherScope;
 import mage.constants.Zone;
 import mage.abilities.Ability;
 import mage.abilities.costs.AlternativeCostImpl;
+import mage.abilities.costs.Cost;
 import mage.abilities.costs.mana.ColoredManaCost;
 import mage.abilities.effects.common.CreateTokenEffect;
 import mage.cards.CardImpl;
@@ -113,7 +114,7 @@ class CobraTrapWatcher extends Watcher {
     }
 }
 
-class CobraTrapAlternativeCost extends AlternativeCostImpl {
+class CobraTrapAlternativeCost extends AlternativeCostImpl<Cost> {
 
     public CobraTrapAlternativeCost() {
         super("you may pay {G} rather than pay Cobra Trap's mana cost");

Mage.Sets/src/mage/sets/zendikar/LavaballTrap.java

@@ -35,6 +35,7 @@ import mage.constants.CardType;
 import mage.constants.Rarity;
 import mage.abilities.Ability;
 import mage.abilities.costs.AlternativeCostImpl;
+import mage.abilities.costs.Cost;
 import mage.abilities.costs.mana.ManaCostsImpl;
 import mage.abilities.effects.common.DamageAllEffect;
 import mage.abilities.effects.common.DestroyTargetEffect;
@@ -83,7 +84,7 @@ public class LavaballTrap extends CardImpl {
 
 class LavaballTrapWatcher extends Watcher {
 
-    private Map<UUID, Integer> amountOfLandsPlayedThisTurn = new HashMap<UUID, Integer>();
+    private Map<UUID, Integer> amountOfLandsPlayedThisTurn = new HashMap<>();
 
     public LavaballTrapWatcher() {
         super("LavaballTrapWatcher", WatcherScope.GAME);
@@ -108,7 +109,7 @@ class LavaballTrapWatcher extends Watcher {
             if (perm.getCardType().contains(CardType.LAND)) {
                 Integer amount = amountOfLandsPlayedThisTurn.get(perm.getControllerId());
                 if (amount == null) {
-                    amount = Integer.valueOf(1);
+                    amount = 1;
                 } else {
                     ++amount;
                 }
@@ -121,8 +122,8 @@ class LavaballTrapWatcher extends Watcher {
         int maxLands = 0;
         for (UUID opponentId : game.getOpponents(playerId)) {
             Integer amount = amountOfLandsPlayedThisTurn.get(opponentId);
-            if (amount != null && amount.intValue() > maxLands) {
+            if (amount != null && amount > maxLands) {
-                maxLands = amount.intValue();
+                maxLands = amount;
             }
         }
         return maxLands;
@@ -135,7 +136,7 @@ class LavaballTrapWatcher extends Watcher {
     }
 }
 
-class LavaballTrapAlternativeCost extends AlternativeCostImpl {
+class LavaballTrapAlternativeCost extends AlternativeCostImpl<Cost> {
 
     public LavaballTrapAlternativeCost() {
         super("you may pay {3}{R}{R} rather than pay Lavaball Trap's mana cost");

Mage.Sets/src/mage/sets/zendikar/LethargyTrap.java

@@ -33,6 +33,7 @@ import mage.constants.CardType;
 import mage.constants.Rarity;
 import mage.abilities.Ability;
 import mage.abilities.costs.AlternativeCostImpl;
+import mage.abilities.costs.Cost;
 import mage.abilities.costs.mana.ManaCostsImpl;
 import mage.abilities.effects.common.continuous.BoostAllEffect;
 import mage.cards.CardImpl;
@@ -78,7 +79,7 @@ public class LethargyTrap extends CardImpl {
     }
 }
 
-class LethargyTrapAlternativeCost extends AlternativeCostImpl {
+class LethargyTrapAlternativeCost extends AlternativeCostImpl<Cost> {
 
     public LethargyTrapAlternativeCost() {
         super("you may pay {U} rather than pay Lethargy Trap's mana cost");

Mage.Sets/src/mage/sets/zendikar/RuneflareTrap.java

@@ -44,6 +44,7 @@ import mage.target.TargetPlayer;
 import mage.watchers.Watcher;
 
 import java.util.UUID;
+import mage.abilities.costs.Cost;
 
 /**
  *
@@ -142,7 +143,7 @@ class CardsDrawnOpponentWatcher extends Watcher {
     }
 }
 
-class RuneflareTrapAlternativeCost extends AlternativeCostImpl {
+class RuneflareTrapAlternativeCost extends AlternativeCostImpl<Cost> {
 
     public RuneflareTrapAlternativeCost() {
         super("you may pay {R} rather than pay Runeflare Trap's mana cost");

Mage.Sets/src/mage/sets/zendikar/SummoningTrap.java

@@ -36,6 +36,7 @@ import mage.constants.WatcherScope;
 import mage.constants.Zone;
 import mage.abilities.Ability;
 import mage.abilities.costs.AlternativeCostImpl;
+import mage.abilities.costs.Cost;
 import mage.abilities.costs.mana.GenericManaCost;
 import mage.abilities.effects.OneShotEffect;
 import mage.cards.Card;
@@ -126,7 +127,7 @@ class SummoningTrapWatcher extends Watcher {
     }
 }
 
-class SummoningTrapAlternativeCost extends AlternativeCostImpl {
+class SummoningTrapAlternativeCost extends AlternativeCostImpl<Cost> {
 
     public SummoningTrapAlternativeCost() {
         super("you may pay {0} rather than pay Summoning Trap's mana cost");

Mage.Sets/src/mage/sets/zendikar/SunspringExpedition.java

@@ -35,6 +35,7 @@ import mage.constants.Zone;
 import mage.abilities.ActivatedAbility;
 import mage.abilities.common.LandfallAbility;
 import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.costs.Cost;
 import mage.abilities.costs.Costs;
 import mage.abilities.costs.CostsImpl;
 import mage.abilities.costs.common.RemoveCountersSourceCost;
@@ -56,7 +57,7 @@ public class SunspringExpedition extends CardImpl {
         this.color.setWhite(true);
 
         this.addAbility(new LandfallAbility(new AddCountersSourceEffect(CounterType.QUEST.createInstance()), true));
-        Costs costs = new CostsImpl();
+        Costs<Cost> costs = new CostsImpl<>();
         costs.add(new RemoveCountersSourceCost(CounterType.QUEST.createInstance(3)));
         costs.add(new SacrificeSourceCost());
         ActivatedAbility ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new GainLifeEffect(8), costs);

Mage/src/mage/abilities/costs/AlternativeCostImpl.java

@@ -3,7 +3,7 @@ package mage.abilities.costs;
 import mage.abilities.Ability;
 import mage.game.Game;
 
-public class AlternativeCostImpl extends CostsImpl implements AlternativeCost {
+public class AlternativeCostImpl<T extends Cost> extends CostsImpl<T> implements AlternativeCost {
 
     protected String name;
 
@@ -13,7 +13,7 @@ public class AlternativeCostImpl extends CostsImpl implements AlternativeCost {
 
     public AlternativeCostImpl(String name, Cost cost) {
         this.name = name;
-        this.add(cost);
+        this.add((T)cost);
     }
 
     public AlternativeCostImpl(final AlternativeCostImpl cost) {