Karador, Ghost Chieftain, Izzet Chemister, and Time Walk

Prerequisites

• Karador, Ghost Chieftain on the battlefield
• Izzet Chemister on the battlefield
• Time Walk in hand
• available the first turn, with each extra turn available

Steps

1. Cast Time Walk by paying , causing you to take an extra turn after this one
2. Activate Izzet Chemister's first ability by paying and tapping it, exiling Time Walk from your graveyard
3. Move to your next turn
4. Activate Izzet Chemister's second ability by paying , tapping and sacrificing it, casting Time Walk from exile without paying its mana cost
5. Resolve Time Walk, causing you to take an extra turn after this one
6. Cast Izzet Chemister from your graveyard by paying
7. Repeat from step 2

Results

• Infinite turns