Haru, Hidden Talent + Bloodghast + Arcane Adaptation + Yahenni, Undying Partisan

Haru, Hidden Talent

Bloodghast

Arcane Adaptation

Yahenni, Undying Partisan

How it works

1. Cast Bloodghast by paying .
2. When Bloodghast enters as an Ally due to Arcane Adaptation, Haru triggers, earthbending a land.
3. Activate Yahenni by sacrificing Bloodghast.
4. Activate Yahenni by sacrificing a land creature.
5. When the land creature dies, Haru triggers, returning the land from your graveyard to the battlefield.
6. When the land enters, Bloodghast triggers, returning itself from your graveyard to the battlefield.
7. When Bloodghast enters as an Ally due to Arcane Adaptation, Haru triggers, earthbending a land.
8. Resolve the Yahenni ability from step 4.
9. Repeat from step 3.