Hellkite Courser + Infinite Reflection + Goblin Bombardment

Hellkite Courser

Infinite Reflection

Goblin Bombardment

How it works

1. Cast your commander from the command zone by paying its mana cost plus commander tax, if applicable.
2. Your commander enters the battlefield as a copy of Hellkite Courser due to Infinite Reflection, triggering its ability.
3. Holding priority, activate Goblin Bombardment by sacrificing your commander.
4. Choose to have your commander returned to the command zone from your graveyard.
5. Resolve the Goblin Bombardment ability, dealing 1 damage to any target.
6. Resolve the trigger from step 2, returning your commander from the command zone to the battlefield.
7. Repeat from step 2.