Danitha, Benalia's Hope + Kaya's Ghostform + Grimgrin, Corpse-Born

Danitha, Benalia's Hope

Kaya's Ghostform

Grimgrin, Corpse-Born

How it works

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