diff --git a/Mage.Sets/src/mage/cards/t/TectonicSplit.java b/Mage.Sets/src/mage/cards/t/TectonicSplit.java
new file mode 100644
index 00000000000..1c565ab7a6c
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/t/TectonicSplit.java
@@ -0,0 +1,109 @@
+package mage.cards.t;
+
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.costs.Cost;
+import mage.abilities.costs.CostImpl;
+import mage.abilities.costs.common.TapSourceCost;
+import mage.abilities.effects.common.continuous.GainAbilityControlledEffect;
+import mage.abilities.effects.mana.AddManaOfAnyColorEffect;
+import mage.abilities.keyword.HexproofAbility;
+import mage.abilities.mana.SimpleManaAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Duration;
+import mage.constants.Outcome;
+import mage.filter.FilterPermanent;
+import mage.filter.StaticFilters;
+import mage.filter.common.FilterControlledLandPermanent;
+import mage.filter.predicate.permanent.CanBeSacrificedPredicate;
+import mage.game.Game;
+import mage.players.Player;
+import mage.target.common.TargetSacrifice;
+
+import java.util.Optional;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class TectonicSplit extends CardImpl {
+
+    public TectonicSplit(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{4}{G}{G}");
+
+        // As an additional cost to cast this spell, sacrifice half the lands you control, rounded up.
+        this.getSpellAbility().addCost(new TectonicSplitCost());
+
+        // Hexproof
+        this.addAbility(HexproofAbility.getInstance());
+
+        // Lands you control have "{T}: Add three mana of any one color."
+        this.addAbility(new SimpleStaticAbility(new GainAbilityControlledEffect(
+                new SimpleManaAbility(new AddManaOfAnyColorEffect(3), new TapSourceCost()),
+                Duration.WhileControlled, StaticFilters.FILTER_LANDS
+        )));
+    }
+
+    private TectonicSplit(final TectonicSplit card) {
+        super(card);
+    }
+
+    @Override
+    public TectonicSplit copy() {
+        return new TectonicSplit(this);
+    }
+}
+
+class TectonicSplitCost extends CostImpl {
+
+    private static final FilterPermanent filter = new FilterControlledLandPermanent();
+
+    static {
+        filter.add(CanBeSacrificedPredicate.instance);
+    }
+
+    TectonicSplitCost() {
+        super();
+        setText("sacrifice half the lands you control, rounded up");
+    }
+
+    private TectonicSplitCost(final TectonicSplitCost cost) {
+        super(cost);
+    }
+
+    @Override
+    public TectonicSplitCost copy() {
+        return new TectonicSplitCost(this);
+    }
+
+    @Override
+    public boolean canPay(Ability ability, Ability source, UUID controllerId, Game game) {
+        return 2 * game.getBattlefield().count(filter, controllerId, source, game)
+                >= game.getBattlefield().count(StaticFilters.FILTER_CONTROLLED_PERMANENT_LAND, controllerId, source, game);
+    }
+
+    @Override
+    public boolean pay(Ability ability, Game game, Ability source, UUID controllerId, boolean noMana, Cost costToPay) {
+        Player player = game.getPlayer(controllerId);
+        if (player == null) {
+            paid = false;
+            return paid;
+        }
+        int count = (1 + game.getBattlefield().count(StaticFilters.FILTER_CONTROLLED_PERMANENT_LAND, controllerId, source, game)) / 2;
+        if (count == 0) {
+            paid = true;
+            return paid;
+        }
+        TargetSacrifice target = new TargetSacrifice(count, StaticFilters.FILTER_LAND);
+        player.choose(Outcome.Sacrifice, target, source, game);
+        for (UUID targetId : target.getTargets()) {
+            Optional.ofNullable(targetId)
+                    .map(game::getPermanent)
+                    .ifPresent(permanent -> permanent.sacrifice(source, game));
+        }
+        paid = true;
+        return paid;
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java b/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java
index f87fcea2572..159b34c5704 100644
--- a/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java
+++ b/Mage.Sets/src/mage/sets/AvatarTheLastAirbenderEternal.java
@@ -266,6 +266,8 @@ public final class AvatarTheLastAirbenderEternal extends ExpansionSet {
         cards.add(new SetCardInfo("Swiftfoot Boots", 317, Rarity.RARE, mage.cards.s.SwiftfootBoots.class));
         cards.add(new SetCardInfo("Tarnished Citadel", 59, Rarity.MYTHIC, mage.cards.t.TarnishedCitadel.class));
         cards.add(new SetCardInfo("Taunting Challenge", 46, Rarity.MYTHIC, mage.cards.t.TauntingChallenge.class));
+        cards.add(new SetCardInfo("Tectonic Split", 144, Rarity.RARE, mage.cards.t.TectonicSplit.class, NON_FULL_USE_VARIOUS));
+        cards.add(new SetCardInfo("Tectonic Split", 208, Rarity.RARE, mage.cards.t.TectonicSplit.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Teferi's Protection", 7, Rarity.MYTHIC, mage.cards.t.TeferisProtection.class));
         cards.add(new SetCardInfo("The Art of Tea", 129, Rarity.COMMON, mage.cards.t.TheArtOfTea.class));
         cards.add(new SetCardInfo("The Blue Spirit", 178, Rarity.RARE, mage.cards.t.TheBlueSpirit.class, NON_FULL_USE_VARIOUS));