[TMT] Implement Raphael's Technique

Mage.Sets/src/mage/cards/r/RaphaelsTechnique.java

@@ -0,0 +1,76 @@
+package mage.cards.r;
+
+import mage.abilities.Ability;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.keyword.SneakAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.game.Game;
+import mage.players.Player;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class RaphaelsTechnique extends CardImpl {
+
+    public RaphaelsTechnique(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.INSTANT}, "{4}{R}{R}");
+
+        // Sneak {2}{R}
+        this.addAbility(new SneakAbility(this, "{2}{R}"));
+
+        // Each player may discard their hand and draw seven cards.
+        this.getSpellAbility().addEffect(new RaphaelsTechniqueEffect());
+    }
+
+    private RaphaelsTechnique(final RaphaelsTechnique card) {
+        super(card);
+    }
+
+    @Override
+    public RaphaelsTechnique copy() {
+        return new RaphaelsTechnique(this);
+    }
+}
+
+class RaphaelsTechniqueEffect extends OneShotEffect {
+
+    RaphaelsTechniqueEffect() {
+        super(Outcome.Benefit);
+        staticText = "each player may discard their hand and draw seven cards";
+    }
+
+    private RaphaelsTechniqueEffect(final RaphaelsTechniqueEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public RaphaelsTechniqueEffect copy() {
+        return new RaphaelsTechniqueEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        List<Player> wheelers = new ArrayList<>();
+        for (UUID playerId : game.getState().getPlayersInRange(source.getControllerId(), game)) {
+            Player player = game.getPlayer(playerId);
+            if (player != null && player.chooseUse(
+                    Outcome.DrawCard, "Discard your hand and draw seven?", source, game
+            )) {
+                game.informPlayers(player.getName() + " chooses to discard their hand and draw seven");
+                wheelers.add(player);
+            }
+        }
+        for (Player player : wheelers) {
+            player.discard(player.getHand(), false, source, game);
+            player.drawCards(7, source, game);
+        }
+        return true;
+    }
+}

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

@@ -29,6 +29,7 @@ public final class TeenageMutantNinjaTurtles extends ExpansionSet {
         cards.add(new SetCardInfo("Mountain", 313, Rarity.LAND, mage.cards.basiclands.Mountain.class, FULL_ART_BFZ_VARIOUS));
         cards.add(new SetCardInfo("Plains", 253, Rarity.LAND, mage.cards.basiclands.Plains.class, FULL_ART_BFZ_VARIOUS));
         cards.add(new SetCardInfo("Plains", 310, Rarity.LAND, mage.cards.basiclands.Plains.class, FULL_ART_BFZ_VARIOUS));
+        cards.add(new SetCardInfo("Raphael's Technique", 105, Rarity.RARE, mage.cards.r.RaphaelsTechnique.class));
         cards.add(new SetCardInfo("Super Shredder", 83, Rarity.MYTHIC, mage.cards.s.SuperShredder.class));
         cards.add(new SetCardInfo("Swamp", 255, Rarity.LAND, mage.cards.basiclands.Swamp.class, FULL_ART_BFZ_VARIOUS));
         cards.add(new SetCardInfo("Swamp", 312, Rarity.LAND, mage.cards.basiclands.Swamp.class, FULL_ART_BFZ_VARIOUS));

Mage/src/main/java/mage/abilities/keyword/SneakAbility.java

@@ -0,0 +1,77 @@
+package mage.abilities.keyword;
+
+import mage.MageIdentifier;
+import mage.abilities.SpellAbility;
+import mage.abilities.costs.common.ReturnToHandChosenControlledPermanentCost;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.cards.Card;
+import mage.constants.PhaseStep;
+import mage.constants.SpellAbilityType;
+import mage.constants.TimingRule;
+import mage.constants.Zone;
+import mage.filter.common.FilterControlledPermanent;
+import mage.filter.predicate.permanent.AttackingPredicate;
+import mage.filter.predicate.permanent.UnblockedPredicate;
+import mage.game.Game;
+import mage.target.common.TargetControlledPermanent;
+
+import java.util.Set;
+
+/**
+ * @author TheElk801
+ */
+public class SneakAbility extends SpellAbility {
+
+    public static final String SNEAK_ACTIVATION_VALUE_KEY = "sneakActivation";
+    private static final FilterControlledPermanent filter = new FilterControlledPermanent("unblocked attacker you control");
+
+    static {
+        filter.add(UnblockedPredicate.instance);
+        filter.add(AttackingPredicate.instance);
+    }
+
+    public SneakAbility(Card card, String manaString) {
+        super(card.getSpellAbility());
+        this.newId();
+        this.setCardName(card.getName() + " with Sneak");
+        timing = TimingRule.INSTANT;
+        zone = Zone.HAND;
+        spellAbilityType = SpellAbilityType.BASE_ALTERNATE;
+
+        this.clearManaCosts();
+        this.clearManaCostsToPay();
+        this.addCost(new ManaCostsImpl<>(manaString));
+        this.addCost(new ReturnToHandChosenControlledPermanentCost(new TargetControlledPermanent(filter)));
+
+        this.setRuleAtTheTop(true);
+    }
+
+    protected SneakAbility(final SneakAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public boolean activate(Game game, Set<MageIdentifier> allowedIdentifiers, boolean noMana) {
+        if (!super.activate(game, allowedIdentifiers, noMana)
+                || game.getStep().getType() != PhaseStep.DECLARE_BLOCKERS) {
+            return false;
+        }
+        this.setCostsTag(SNEAK_ACTIVATION_VALUE_KEY, null);
+        return true;
+    }
+
+    @Override
+    public SneakAbility copy() {
+        return new SneakAbility(this);
+    }
+
+    @Override
+    public String getRule() {
+        StringBuilder sb = new StringBuilder("Sneak ");
+        sb.append(getManaCosts().getText());
+        sb.append(" <i>(You may cast this spell for ");
+        sb.append(getManaCosts().getText());
+        sb.append(" if you also return an unblocked attacker you control to hand during the declare blockers step.)</i>");
+        return sb.toString();
+    }
+}

Utils/keywords.txt

@@ -126,6 +126,7 @@ Shroud|instance|
 Soulbond|new|
 Soulshift|number|
 Skulk|new|
+Sneak|card, manaString|
 Spectacle|card, cost|
 Spree|card|
 Squad|cost|