Prerequisites
- Ulamog's Dreadsire on the battlefield
- Thornbite Staff on the battlefield
- Yahenni, Undying Partisan on the battlefield
- Thornbite Staff attached to Ulamog's Dreadsire
- Ulamog's Dreadsire does not have summoning sickness
Steps
- Activate Ulamog's Dreadsire by tapping it, creating a 10/10 Eldrazi creature tokens
- Activate Yahenni by sacrificing the Eldrazi token
- When the Eldrazi token dies, Ulamog's Dreadsire triggers, untapping Ulamog's Dreadsire
- Resolve the Yahenni ability
- Repeat
Results
Required Cards 3
Ulamog's Dreadsire
Creature — Eldrazi
Thornbite Staff
Kindred Artifact — Shaman Equipment
Yahenni, Undying Partisan
Legendary Creature — Aetherborn Vampire