Hansk, Slayer Zealot, Thornbite Staff, and Gorgon's Head

Prerequisites

• All permanents on the battlefield
• Gorgon's Head and Thornbite Staff attached to Hansk
• Hansk does not have summoning sickness

Steps

1. Activate Hansk by tapping it, dealing 2 damage to target creature
2. That creature dies from lethal damage due to Hansk's deathtouch ability
3. Hansk's ability from Thornbite Staff triggers, untapping itself
4. Repeat for each creature opponents control and whenever an opponent controls a creature

Results

• Destroy all creatures opponents control
• Destroy all creatures that enter the battlefield under an opponent's control