Saffi Eriksdotter + Reveillark + Goblin Bombardment

Saffi Eriksdotter

Reveillark

Goblin Bombardment

How it works

1. Activate Saffi by sacrificing it, targeting Reveillark.
2. Activate Goblin Bomabrdment by sacrificing Reveillark.
3. When Reveillark dies, it and Saffi trigger.
4. Resolve the Saffi trigger, returning Reveillark from your graveyard to the battlefield.
5. Resolve the Reveillark trigger, returning Saffi from your graveyard to the battlefield.
6. Resolve the Goblin Bomabrdment ability from step 2, dealing 1 damage to any target.
7. Repeat.