Blood Pet + Decaying Soil + Carnival of Souls + Cruel Celebrant

Blood Pet

Decaying Soil

Carnival of Souls

Cruel Celebrant

How it works

1. Cast Blood Pet by paying .
2. When Blood Pet enters the battlefield, Carnival of Souls triggers, causing you to add and lose 1 life.
3. Activate Blood Pet by sacrificing it, adding .
4. When Blood Pet dies, Decaying Soil and Cruel Celebrant trigger.
5. Resolve the Decaying Soil trigger, causing you to pay 1 to return Blood Pet from your graveyard to your hand.
6. Resolve the Cruel Celebrant trigger, causing each opponent to lose 1 life and you to gain one life.
7. Repeat.