Sidisi, Regent of the Mire + Karmic Guide + Thornbite Staff + Ashnod's Altar

Sidisi, Regent of the Mire

Karmic Guide

Thornbite Staff

Ashnod's Altar

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 Ashnod's Altar by sacrificing Karmic Guide.
6. When Karmic Guide dies, Sidisi triggers, untapping Sidisi.
7. Repeat.