fix #12530 (Indomitable Might)

Mage.Sets/src/mage/cards/i/IndomitableMight.java

@@ -74,7 +74,7 @@ public boolean applies(UUID sourceId, Ability source, UUID affectedControllerId,
             return false;
         }
         Permanent permanent = game.getPermanent(sourcePermanent.getAttachedTo());
-        if (permanent == null) {
+        if (permanent == null || !sourceId.equals(permanent.getId())) {
             return false;
         }
         Player controller = game.getPlayer(permanent.getControllerId());

Mage.Tests/src/test/java/org/mage/test/cards/single/afc/IndomitableMightTest.java

@@ -0,0 +1,52 @@
+package org.mage.test.cards.single.afc;
+
+import mage.constants.PhaseStep;
+import mage.constants.Zone;
+import org.junit.Test;
+import org.mage.test.serverside.base.CardTestPlayerBase;
+
+/**
+ * @author xenohedron
+ */
+public class IndomitableMightTest extends CardTestPlayerBase {
+
+    private static final String might = "Indomitable Might"; // 3G flash aura +3/+3 may assign combat damage as though weren't blocked
+    private static final String bear = "Runeclaw Bear"; // 2/2
+    private static final String centaur = "Centaur Courser"; // 3/3
+    private static final String drake = "Azure Drake"; // 2/4 flying
+    private static final String crab = "Fortress Crab"; // 1/6
+
+    @Test
+    public void testAsThoughEffect() {
+        addCard(Zone.BATTLEFIELD, playerA, "Forest", 4);
+        addCard(Zone.BATTLEFIELD, playerA, bear);
+        addCard(Zone.BATTLEFIELD, playerA, centaur);
+        addCard(Zone.BATTLEFIELD, playerB, drake);
+        addCard(Zone.BATTLEFIELD, playerB, crab);
+        addCard(Zone.HAND, playerA, might);
+
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, might, bear);
+
+        checkPT("boosted", 1, PhaseStep.BEGIN_COMBAT, playerA, bear, 5, 5);
+
+        attack(1, playerA, bear, playerB);
+        attack(1, playerA, centaur, playerB);
+
+        block(1, playerB, drake, centaur);
+        block(1, playerB, crab, bear);
+
+        setChoice(playerA, true); // yes to assign damage as though not blocked (only enchanted creature)
+
+        setStrictChooseMode(true);
+        setStopAt(1, PhaseStep.END_TURN);
+        execute();
+
+        assertLife(playerA, 20);
+        assertLife(playerB, 15);
+        assertDamageReceived(playerA, bear, 1);
+        assertDamageReceived(playerA, centaur, 2);
+        assertDamageReceived(playerB, drake, 3);
+        assertDamageReceived(playerB, crab, 0);
+    }
+
+}