Implemented Curious Herd

Mage.Sets/src/mage/cards/c/CuriousHerd.java

@@ -0,0 +1,68 @@
+package mage.cards.c;
+
+import mage.abilities.Ability;
+import mage.abilities.effects.OneShotEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.game.permanent.token.Token;
+import mage.target.common.TargetOpponent;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class CuriousHerd extends CardImpl {
+
+    public CuriousHerd(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.INSTANT}, "{3}{G}");
+
+        // Choose target opponent. You create X 3/3 green Beast creature tokens, where X is the number of artifacts that player controls.
+        this.getSpellAbility().addEffect(new CuriousHerdEffect());
+        this.getSpellAbility().addTarget(new TargetOpponent());
+    }
+
+    private CuriousHerd(final CuriousHerd card) {
+        super(card);
+    }
+
+    @Override
+    public CuriousHerd copy() {
+        return new CuriousHerd(this);
+    }
+}
+
+class CuriousHerdEffect extends OneShotEffect {
+
+    private static final Token token = new BeastToken();
+
+    CuriousHerdEffect() {
+        super(Outcome.Benefit);
+        staticText = "Choose target opponent. You create X 3/3 green Beast creature tokens, " +
+                "where X is the number of artifacts that player controls.";
+    }
+
+    private CuriousHerdEffect(final CuriousHerdEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public CuriousHerdEffect copy() {
+        return new CuriousHerdEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        int artifactCount = game.getBattlefield().countAll(
+                StaticFilters.FILTER_PERMANENT_ARTIFACT, source.getFirstTarget(), game
+        );
+        if (artifactCount > 0) {
+            token.putOntoBattlefield(artifactCount, game, source.getSourceId(), source.getControllerId());
+        }
+        return true;
+    }
+}

Mage.Sets/src/mage/sets/Commander2020Edition.java

@@ -23,6 +23,7 @@ public final class Commander2020Edition extends ExpansionSet {
         cards.add(new SetCardInfo("Alesha, Who Smiles at Death", 143, Rarity.RARE, mage.cards.a.AleshaWhoSmilesAtDeath.class));
         cards.add(new SetCardInfo("Arcane Signet", 237, Rarity.COMMON, mage.cards.a.ArcaneSignet.class));
         cards.add(new SetCardInfo("Crop Rotation", 169, Rarity.COMMON, mage.cards.c.CropRotation.class));
+        cards.add(new SetCardInfo("Curious Herd", 59, Rarity.RARE, mage.cards.c.CuriousHerd.class));
         cards.add(new SetCardInfo("Lifecrafter's Bestiary", 244, Rarity.RARE, mage.cards.l.LifecraftersBestiary.class));
         cards.add(new SetCardInfo("Rashmi, Eternities Crafter", 229, Rarity.RARE, mage.cards.r.RashmiEternitiesCrafter.class));
         cards.add(new SetCardInfo("Shared Animosity", 158, Rarity.RARE, mage.cards.s.SharedAnimosity.class));