Assault Suit, and Giant Shark

Prerequisites

• Assault Suit on the battlefield
• Giant Shark on the battlefield
• Assault Suit attached to Giant Shark
• A player controls no Islands

Steps

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

Results

• Draw the game