Pre-War Formalwear + Leonin Relic-Warder + Yahenni, Undying Partisan

Pre-War Formalwear

Leonin Relic-Warder

Yahenni, Undying Partisan

How it works

1. Cast Leonin Relic-Warder by paying .
2. When Leonin Relic-Warder enters the battlefield, its first ability triggers, exiling Pre-War Formalwear.
3. Activate Yahenni by sacrificing Leonin Relic-Warder.
4. When Leonin Relic-Warder dies, its second ability triggers, returning Pre-War Formalwear from exile to the battlefield.
5. When Pre-War Formalwear enters the battlefield, it triggers, returning Leonin Relic-Warder from your graveyard to the battlefield, and attaching Pre-War Formalwear to it.
6. When Leonin Relic-Warder enters the battlefield, its first ability triggers, exiling Pre-War Formalwear.
7. Resolve the Yahenni ability from step 3.
8. Repeat from step 3.