Cayth, Famed Mechanist + Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Goblin Bombardment

WUBR identity

Commander legal

The 3 combo pieces

• Cayth, Famed Mechanist
• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
• Goblin Bombardment

How to execute it

1. Activate Goblin Bombardment by sacrificing Cayth.
2. When Cayth dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Cayth enters, its fabricate ability triggers, putting a +1/+1 counter on it.
4. Resolve the Goblin Bombardment ability.
5. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers