Ratadrabik of Urborg + Boonweaver Giant + In Bolas's Clutches + Yahenni, Undying Partisan

Ratadrabik of Urborg

Boonweaver Giant

In Bolas's Clutches

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Boonweaver Giant.
2. When Boonweaver Giant dies as a legendary creature due to In Bolas's Clutches, Ratadrabik of Urborg triggers, creating a token copy of Boonweaver Giant that is a 2/2 Zombie in addition to its other types.
3. When the Boonweaver Giant token enters the battlefield, it triggers, returning In Bolas's Clutches from your graveyard to the battlefield attached to the token.
4. Resolve the Yahenni ability, giving it indestructible until end of turn.
5. Repeat.