Izzet Chemister + Helm of the Host + Time Walk

Prerequisites

• Helm of the Host attached to Izzet Chemister.

Steps

1. 1Cast Time Walk by paying , causing you to take an extra turn after this one.
2. 2At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of Izzet Chemister.
3. 3Activate the Izzet Chemister token's first ability by paying and tapping it, exiling Time Walk from your graveyard.
4. 4On your next turn, activate the Izzet Chemister token's last ability by paying , tapping it, and sacrificing it, casting the exiled spell without paying its mana cost.
5. 5Resolve that spell, causing you to take an extra turn after this one.
6. 6Repeat from step 2.

Effects

• Infinite turns
• Lock