Narfi, Betrayer King + Rimefeather Owl + Soldevi Adnate + Intruder Alarm

Prerequisites

• Soldevi Adnate does not have summoning sickness.

Steps

1. 1Activate Rimefeather Owl by paying , putting an ice counter on Soldevi Adnate and causing it to become snow.
2. 2Activate Soldevi Adnate by tapping it and sacrificing Narfi, adding .
3. 3Activate Narfi by paying , returning it from your graveyard to the battlefield.
4. 4When Narfi enters the battlefield, Intruder Alarm triggers, untapping all creatures.
5. 5Repeat from step 2.

Effects

• Infinite black mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite mana creatures you control can produce
• Infinite snow mana
• Infinite untap of creatures