Garna, the Bloodflame, Sneak Attack, Diamond Lion, and Umbral Collar Zealot

Prerequisites

• Garna, the Bloodflame in hand
• Sneak Attack on the battlefield
• Diamond Lion in hand
• Umbral Collar Zealot on the battlefield
• available

Steps

1. Activate Sneak Attack by paying , putting Diamond Lion from your hand onto the battlefield
2. Activate Sneak Attack by paying , putting Garna from your hand onto the battlefield
3. When Garna enters, it triggers
4. Holding priority, activate Diamond Lion by tapping and sacrificing it, adding
5. Activate Umbral Collar Zealot by sacrificing Garna
6. Resolve the Garna ability from step 3, returning all creature cards that were put in your graveyard this turn to your hand
7. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite colored mana
• Infinite death triggers
• Infinite recursion of creature cards in your graveyard
• Infinite sacrifice triggers
• Infinite surveil