Displacer Kitten, Drafna, Founder of Lat-Nam, Mana Crypt, and Urza, Lord High Artificer

Prerequisites

• Displacer Kitten on the battlefield
• Drafna, Founder of Lat-Nam on the battlefield
• Mana Crypt in hand
• Urza, Lord High Artificer on the battlefield

Steps

1. Cast Mana Crypt by paying
2. Displacer Kitten triggers, blinking Urza
3. Urza enters the battlefield, creating a 0/0 Construct artifact creature token
4. Activate Urza's second ability by tapping the Construct, adding
5. Mana Crypt resolves
6. Activate Mana Crypt by tapping it, adding
7. Activate Drafna's first ability by paying , returning Mana Crypt from the battlefield to your hand
8. Repeat
9. Once you have infinite colorless mana, you may get infinite blue mana by tapping Mana Crypt with Urza's ability, and you may activate Urza's last ability any number of times

Results

• Cast any cards in your library
• Infinite blue mana
• Infinite colorless mana
• Infinite ETB
• Infinite LTB
• Infinite storm count
• Infinite tapped creature tokens