Karn, the Great Creator, Displacer Kitten, Tormod's Crypt, and Lotus Petal

Prerequisites

• Karn, the Great Creator on the battlefield
• Displacer Kitten on the battlefield
• Tormod's Crypt on the battlefield
• Lotus Petal on the battlefield
• At least three loyalty counters on Karn

Steps

1. Activate Lotus Petal by tapping and sacrificing it, adding one mana of any color
2. Activate Tormod's Crypt by tapping and sacrificing it, exiling your graveyard
3. Activate Karn's -2 ability, putting Lotus Petal into your hand from exile
4. Cast Lotus Petal by paying
5. Displacer Kitten triggers, blinking Karn
6. Lotus Petal resolves
7. Activate Karn's -2 ability, putting Tormod's Crypt into your hand from exile
8. Cast Tormod's Crypt by paying
9. Displacer Kitten triggers, blinking Karn
10. Tormod's Crypt resolves
11. Repeat

Results

• Infinite colored mana
• Infinite storm count
• Put all artifacts from your exile or graveyard into your hand