Molten Echoes, and Unstoppable Ash

Prerequisites

• Molten Echoes on the battlefield
• Unstoppable Ash in hand
• available

Steps

1. Cast Unstoppable Ash by paying its mana cost
2. When Unstoppable Ash enters the battlefield, its champion ability and Molten Echoes triggers
3. Resolve the Molten Echoes trigger, creating a token copy of Unstoppable Ash with haste
4. When the Unstoppable Ash token enters the battlefiled, its champion ability triggers, exiling the nontoken Unstoppable Ash until the token Unstoppable Ash leaves the battlefield
5. Resolve the champion ability from step 2, exiling the token Unstoppable Ash
6. The token Unstoppable Ash leaves the battlefield, returning the nontoken Unstoppable Ash from exile to the battlefield
7. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB