Assault Suit, and Emperor Crocodile

Prerequisites

• Assault Suit on the battlefield
• Emperor Crocodile on the battlefield
• Assault Suit attached to Emperor Crocodile
• An opponent controls no creatures, or you control no other creatures

Steps

1. If needed, give control of Emperor Crocodile to an opponent who controls no creatures
2. When Emperor Crocodile's controller controls no creatures, Emperor Crocodile triggers, causing them to sacrifice it
3. However, Emperor Crocodile cannot be sacrificed due to Assault Suit
4. Emperor Crocodile triggers again, creating a mandatory infinite loop that causes the game to end in a draw

Results

• Draw the game