Niv-Mizzet, Parun, and Snake Umbra

Prerequisites

• Niv-Mizzet, Parun on the battlefield
• Snake Umbra on the battlefield
• Snake Umbra attached to Niv-Mizzet
• You have a way to draw a card

Steps

1. Draw a card
2. Niv-Mizzet's first ability triggers, dealing 1 damage to any opponent
3. Niv-Mizzet triggers, causing you to draw a card
4. Repeat from step 2

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite damage