Anti-Venom, Horrifying Healer + Cloudstone Curio + Palinchron + Yahenni, Undying Partisan

Anti-Venom, Horrifying Healer

Cloudstone Curio

Palinchron

Yahenni, Undying Partisan

How it works

1. Activate up to seven lands by tapping them, adding at least .
2. Cast Anti-Venom by paying .
3. When Anti-Venom enters, its first ability and Cloudstone Curio trigger.
4. Resolve the Cloudstone Curio trigger, returning nothing to your hand.
5. Resolve the Anti-Venom trigger, returning Palinchron from your graveyard to the battlefield.
6. When Palinchron enters, it and Cloudstone Curio trigger.
7. Resolve the Palinchron trigger, untapping up to seven lands.
8. Resolve the Cloudstone Curio trigger, returning Anti-Venom from the battlefield to your hand.
9. Activate Yahenni by sacrificing Palinchron.
10. Repeat.

This clever loop turns Palinchron and Anti-Venom, Horrifying Healer into a perpetual self-sustaining engine by bouncing them back and forth between the battlefield, hand, and graveyard. As Palinchron enters to untap your lands, Cloudstone Curio triggers to scoop Anti-Venom back to your hand, while Anti-Venom's own entry trigger resurrects Palinchron from the graveyard whenever you recast it. Meanwhile, Yahenni, Undying Partisan stands ready to sacrifice Palinchron at a moment's notice to fuel the loop and protect your board with indestructible, all while leaving you with a mountain of excess mana and triggers.