Dragonlord Kolaghan + Sword of Hearth and Home + Port Razer
Dragonlord Kolaghan
Sword of Hearth and Home
Port Razer
Infinite combat damageInfinite combat phasesInfinite creature ETBInfinite creature LTBInfinite mana creatures you control can produceInfinite untap of creatures you controlNear-infinite landfall triggersPut all basic lands from your library onto the battlefield
How it works
Deal combat damage to an opponent with Dragonlord Kolaghan and Port Razer, triggering Sword of Hearth and Home and Port Razer.
Resolve the Port Razer trigger, untapping all creatures you control and causing you to get an additional combat phase after this one.
Resolve the Sword of Hearth and Home trigger, exiling Port Razer, then causing you to search your library for a basic land card, then put the land and Port Razer onto the battlefield.