Izzet Chemister, Helm of the Host, and Time Stretch

Prerequisites

• Izzet Chemister on the battlefield
• Helm of the Host on the battlefield
• Time Stretch in hand
• Helm of the Host attached to Izzet Chemister
• available the first turn, with each extra turn available

Steps

1. Cast Time Stretch by paying , causing you to take two extra turns after this one
2. At the beginning of your combat phase, Helm of the Host triggers, creating a token copy of Izzet Chemister
3. Activate the Izzet Chemister token's first ability by paying and tapping it, exiling Time Stretch from your graveyard
4. On 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. Resolve that spell, causing you to take two extra turns after this one
6. Repeat from step 2 (note that you may divide these steps among your multiple extra turns to reduce the mana requirements down to the amount shown in the prerequisites)

Results

• Infinite turns