Toralf, God of Fury // Toralf's Hammer, and Star of Extinction

Prerequisites

• Toralf, God of Fury // Toralf's Hammer on the battlefield
• Star of Extinction in hand
• available

Steps

1. Cast Star of Extinction by paying , destroying target land and dealing 20 damage to each creature and each planeswalker
2. Toralf triggers for each creature your opponent control that is dealt excess damage this way
3. Resolve a Toralf trigger, dealing damage equal to the excess damage to any target
4. Repeat step 3 for each remaining trigger

Results

• Near-infinite damage