Ashaya, Soul of the Wild, Caged Sun, and Karn, Silver Golem

Prerequisites

• Ashaya, Soul of the Wild on the battlefield
• Caged Sun on the battlefield
• Karn, Silver Golem on the battlefield
• "Green" chosen with Caged Sun
• Caged Sun does not have summoning sickness
• available

Steps

1. Activate Karn by paying , causing Caged Sun to become an artifact creature until end of turn
2. Activate Caged Sun by tapping it, adding
3. Caged Sun triggers, adding
4. Repeat step 2
5. As Caged Sun's triggered ability is a mana ability, this combo creates a mandatory infinite loop that cannot be interacted with, thus ending the game in a draw

Results

• Draw the game