Olivia, Crimson Bride, Port Razer, and Goblin Bombardment

Prerequisites

• Olivia, Crimson Bride on the battlefield
• Port Razer in the graveyard
• Goblin Bombardment on the battlefield
• Olivia does not have summoning sickness
• An opponent is unable to block your creatures

Steps

1. Declare Olivia as an attacker, attacking an opponent unable to block your creatures
2. Olivia triggers, returning Port Razer from your graveyard to the battlefield tapped and attacking that opponent
3. Deal combat damage with Port Razer, triggering its ability, untapping all creatures you control and getting an additional combat phase after this one
4. Activate Goblin Bombardment by sacrificing Port Razer, dealing 1 damage to any target
5. Repeat

Results

• Infinite combat phases
• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers