Cast Through Time, Venser, Shaper Savant, Crystal Shard, and Walk the Aeons

Prerequisites

• Cast Through Time on the battlefield
• Venser, Shaper Savant on the battlefield
• Crystal Shard on the battlefield
• Walk the Aeons in hand
• available each turn
• An additional or available to activate Crystal Shard

Steps

1. Cast Walk the Aeons by paying , granting you an extra turn after this one and exiling it due to rebound
2. At the beginning of your next upkeep, rebound triggers, causing you to cast the exiled spell without paying its mana cost
3. Activate Crystal Shard by tapping it and paying or , returning Venser to your hand
4. Cast Venser by paying
5. When Venser enters the battlefield, they trigger, returning the extra turn spell to your hand
6. Repeat each turn

Results

• Infinite turns