diff --git a/Mage.Tests/src/test/java/org/mage/test/cards/abilities/other/GainMenaceAbilityAsSingletonTest.java b/Mage.Tests/src/test/java/org/mage/test/cards/abilities/other/GainMenaceAbilityAsSingletonTest.java
new file mode 100644
index 0000000000..473f9327a3
--- /dev/null
+++ b/Mage.Tests/src/test/java/org/mage/test/cards/abilities/other/GainMenaceAbilityAsSingletonTest.java
@@ -0,0 +1,59 @@
+package org.mage.test.cards.abilities.other;
+
+import mage.abilities.keyword.MenaceAbility;
+import mage.constants.PhaseStep;
+import mage.constants.Zone;
+import mage.game.permanent.Permanent;
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.mage.test.serverside.base.CardTestPlayerBase;
+
+/**
+ * @author JayDi85
+ */
+public class GainMenaceAbilityAsSingletonTest extends CardTestPlayerBase {
+
+    @Test
+    @Ignore // enable it after MenaceAbility will be singleton, see https://github.com/magefree/mage/issues/6720
+    public void test_SingletonNonMultiInstances() {
+        // bug: permanent shows multiple instances of one ability in card's text
+        // https://github.com/magefree/mage/issues/6720
+
+        // {3}{R}{R}
+        // Whenever Sethron, Hurloon General or another nontoken Minotaur enters the battlefield under your control, create a 2/3 red Minotaur creature token.
+        // {2}{B/R}: Minotaurs you control get +1/+0 and gain menace and haste until end of turn. ({B/R} can be paid with either {B} or {R}.)
+        addCard(Zone.HAND, playerA, "Sethron, Hurloon General", 7);
+        addCard(Zone.BATTLEFIELD, playerA, "Mountain", 5 + 3 * 3);
+
+        // prepare minotaur token
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Sethron, Hurloon General");
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+        checkPermanentCount("token", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Minotaur", 1);
+
+        // boost 1
+        activateAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{2}{B/R}");
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+        checkPT("boost 1", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Minotaur", 2 + 1, 3);
+
+        // boost 2
+        activateAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{2}{B/R}");
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+        checkPT("boost 2", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Minotaur", 2 + 1 * 2, 3);
+
+        // boost 3
+        activateAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{2}{B/R}");
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+        checkPT("boost 3", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Minotaur", 2 + 1 * 3, 3);
+
+        setStrictChooseMode(true);
+        setStopAt(1, PhaseStep.END_TURN);
+        execute();
+        assertAllCommandsUsed();
+
+        Permanent permanent = getPermanent("Minotaur", playerA);
+        Assert.assertEquals("must have only 1 Menace instance", 1, permanent.getAbilities(currentGame).stream()
+                .filter(a -> a instanceof MenaceAbility).count());
+
+    }
+}