Kaya's Ghostform + Brotherhood Outcast + Grimgrin, Corpse-Born

Kaya's Ghostform

Brotherhood Outcast

Grimgrin, Corpse-Born

How it works

1. Activate Grimgrin by sacrificing Brotherhood Outcast.
2. When Brotherhood Outcast dies, Kaya's Ghostform triggers, returning Brotherhood Outcast from your graveyard to the battlefield.
3. When Brotherhood Outcast enters, it triggers, returning Kaya's Ghostform from your graveyard to the battlefield attached to Brotherhood Outcast
4. Resolve the Grimgrin ability.
5. Repeat.
6. Activate Grimgrin by sacrificing Brotherhood Outcast.
7. When Brotherhood Outcast dies, Kaya's Ghostform triggers, returning Brotherhood Outcast from your graveyard to the battlefield.
8. When Brotherhood Outcast enters the battlefield, it triggers, returning Kaya's Ghostform from your graveyard to the battlefield attached to Brotherhood Outcast.
9. Resolve the Grimgrin ability.
10. Repeat.