diff --git a/Mage.Sets/src/mage/cards/s/SphinxOfTheSecondSun.java b/Mage.Sets/src/mage/cards/s/SphinxOfTheSecondSun.java
new file mode 100644
index 0000000000..b0c9183803
--- /dev/null
+++ b/Mage.Sets/src/mage/cards/s/SphinxOfTheSecondSun.java
@@ -0,0 +1,101 @@
+package mage.cards.s;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.BeginningOfPostCombatMainTriggeredAbility;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.keyword.FlyingAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.turn.TurnMod;
+import mage.watchers.Watcher;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class SphinxOfTheSecondSun extends CardImpl {
+
+    public SphinxOfTheSecondSun(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{6}{U}{U}");
+
+        this.subtype.add(SubType.SPHINX);
+        this.power = new MageInt(6);
+        this.toughness = new MageInt(6);
+
+        // Flying
+        this.addAbility(FlyingAbility.getInstance());
+
+        // At the beginning of your postcombat main phase, you get an additional beginning phase after this phase.
+        this.addAbility(new BeginningOfPostCombatMainTriggeredAbility(
+                new SphinxOfTheSecondSunEffect(), TargetController.YOU, false
+        ), new SphinxOfTheSecondSunWatcher());
+    }
+
+    private SphinxOfTheSecondSun(final SphinxOfTheSecondSun card) {
+        super(card);
+    }
+
+    @Override
+    public SphinxOfTheSecondSun copy() {
+        return new SphinxOfTheSecondSun(this);
+    }
+}
+
+class SphinxOfTheSecondSunEffect extends OneShotEffect {
+
+    SphinxOfTheSecondSunEffect() {
+        super(Outcome.Benefit);
+        staticText = "you get an additional beginning phase after this phase";
+    }
+
+    private SphinxOfTheSecondSunEffect(final SphinxOfTheSecondSunEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public SphinxOfTheSecondSunEffect copy() {
+        return new SphinxOfTheSecondSunEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        TurnPhase turnPhase = game.getPhase().getType();
+        for (TurnMod turnMod : game.getState().getTurnMods()) {
+            if ("sphinxSecondSun".equals(turnMod.getNote())
+                    && turnMod.getPlayerId().equals(source.getControllerId())
+                    && turnMod.getAfterPhase() == turnPhase) {
+                turnPhase = TurnPhase.BEGINNING;
+                turnMod.setNote("sphinxSecondSunIgnore");
+                break;
+            }
+        }
+        TurnMod combat = new TurnMod(source.getControllerId(), TurnPhase.POSTCOMBAT_MAIN, turnPhase, false);
+        combat.setNote("sphinxSecondSun");
+        game.getState().getTurnMods().add(combat);
+        return true;
+    }
+}
+
+class SphinxOfTheSecondSunWatcher extends Watcher {
+
+    SphinxOfTheSecondSunWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() != GameEvent.EventType.POSTCOMBAT_MAIN_PHASE_PRE) {
+            return;
+        }
+        for (TurnMod turnMod : game.getState().getTurnMods()) {
+            if ("sphinxSecondSun".equals(turnMod.getNote())) {
+                turnMod.setNote("sphinxSecondSunIgnore");
+            }
+        }
+    }
+}
diff --git a/Mage.Sets/src/mage/sets/CommanderLegends.java b/Mage.Sets/src/mage/sets/CommanderLegends.java
index 3f5b1f1204..f2e9fcba1b 100644
--- a/Mage.Sets/src/mage/sets/CommanderLegends.java
+++ b/Mage.Sets/src/mage/sets/CommanderLegends.java
@@ -453,6 +453,7 @@ public final class CommanderLegends extends ExpansionSet {
         cards.add(new SetCardInfo("Spectator Seating", 356, Rarity.RARE, mage.cards.s.SpectatorSeating.class));
         cards.add(new SetCardInfo("Spectral Searchlight", 342, Rarity.COMMON, mage.cards.s.SpectralSearchlight.class));
         cards.add(new SetCardInfo("Sphinx of Uthuun", 406, Rarity.RARE, mage.cards.s.SphinxOfUthuun.class));
+        cards.add(new SetCardInfo("Sphinx of the Second Sun", 99, Rarity.MYTHIC, mage.cards.s.SphinxOfTheSecondSun.class));
         cards.add(new SetCardInfo("Spirit Mantle", 385, Rarity.UNCOMMON, mage.cards.s.SpiritMantle.class));
         cards.add(new SetCardInfo("Spitting Image", 453, Rarity.RARE, mage.cards.s.SpittingImage.class));
         cards.add(new SetCardInfo("Spontaneous Mutation", 100, Rarity.COMMON, mage.cards.s.SpontaneousMutation.class));