Havi, the All-Father + Sakashima the Impostor + Goblin Bombardment

Havi, the All-Father

Sakashima the Impostor

Goblin Bombardment

How it works

1. Activate Goblin Bombardment by sacrificing Sakashima the Impostor.
2. When Sakashima the Impostor dies, it and Havi trigger.
3. Resolve the Havi trigger, returning Sakashima the Impostor from your graveyard to the battlefield as a copy of Havi.
4. Resolve the Sakashima the Impostor trigger, returning any legendary creature card with mana value 5 or less from your graveyard to the battlefield.
5. Resolve the Goblin Bombardment ability, dealing 1 damage to any target.
6. Repeat.