Garza Zol, Plague Queen, Agatha's Soul Cauldron, Monoskelion, and Revel in Riches

Prerequisites

• Garza Zol, Plague Queen on the battlefield
• Agatha's Soul Cauldron on the battlefield
• Monoskelion in exile
• Revel in Riches on the battlefield
• Garza Zol has at least one +1/+1 counter on it
• You have a way to give Garza Zol deathtouch
• available

Steps

1. Give Garza Zol deathtouch, if needed
2. Activate Garza Zol using Monoskelion's ability by paying and removing a +1/+1 counter from it, dealing 1 damage to a creature an opponent controls
3. The creature dies as a state-based action due to Garza Zol's deathtouch
4. Garza Zol and Revel in Riches' first abilities trigger
5. Resolve the Garza Zol trigger, putting a +1/+1 counter on itself
6. Resolve the Revel in Riches trigger, creating a Treasure artifact token
7. Activate the Treasure by tapping and sacrificing it, adding
8. Repeat from step 2
9. You may also repeat this combo whenever a creature enters the battlefield under an opponent's control if you can give Garza Zol deathtouch indefinitely

Results

• Destroy all creatures opponents control
• Destroy any creature that enters the battlefield under an opponent's control