Leonin Relic-Warder, and Ygra, Eater of All

Prerequisites

• Leonin Relic-Warder in hand
• Ygra, Eater of All on the battlefield
• available

Steps

1. Cast Leonin Relic-Warder by paying
2. When Leonin Relic-Warder enters, its first ability triggers, allowing you to exile Leonin Relic-Warder due to Ygra
3. When Leonin Relic-Warder leaves the battlefield, its last ability triggers, returning itself from exile to the battlefield
4. Repeat from step 2 any number of times

Results

• Infinite ETB
• Infinite LTB