Magar of the Magic Strings, and Walk the Aeons

Prerequisites

• Magar of the Magic Strings on the battlefield
• Walk the Aeons in hand
• An opponent is unable to block and kill creatures you control
• available

Steps

1. Cast Walk the Aeons by paying , causing you to take an extra turn after this one
2. Activate Magar by paying , noting Walk the Aeons and putting it face down as a 3/3 creature
3. Move to your next turn
4. Deal combat damage to an opponent with the face down creature
5. The face down creature triggers, causing you to cast a copy of Walk the Aeons without paying its mana cost
6. Resolve the copy of Walk the Aeons, causing you to take an extra turn after this one
7. Repeat from step 3

Results

• Infinite turns