Sidisi, Regent of the Mire + Karmic Guide + Thornbite Staff + Yahenni, Undying Partisan

Sidisi, Regent of the Mire

Karmic Guide

Thornbite Staff

Yahenni, Undying Partisan

How it works

1. Activate Sidisi by tapping it and sacrificing the creature with mana value 4.
2. When the creature dies, Sidisi triggers, untapping Sidisi.
3. Resolve the Sidisi ability, returning Karmic Guide from your graveyard to the battlefield.
4. When Karmic Guide enters the battlefield, it triggers, returning the creature with mana value 4 from your graveyard to the battlefield.
5. Activate Yahenni by sacrificing Karmic Guide.
6. When Karmic Guide dies, Sidisi triggers, untapping Sidisi.
7. Resolve the Yahenni ability.
8. Repeat.