Plaguemaw Beast, Thornbite Staff, and Scurry Oak

Prerequisites

• Plaguemaw Beast on the battlefield
• Thornbite Staff on the battlefield
• Scurry Oak on the battlefield
• Plaguemaw Beast does not have summoning sickness
• Scurry Oak has at least one +1/+1 counter on it
• You control at least one additional creature
• Thornbite Staff attached to Plaguemaw Beast

Steps

1. Activate Plaguemaw Beast by tapping it and sacrificing another creature
2. When the creature dies, Plaguemaw Beast triggers, untapping itself
3. Resolve the Plaguemaw Beast ability, putting a +1/+1 counter on Scurry Oak
4. Scurry Oak triggers, creating a 1/1 Squirrel creature token
5. Repeat

Results

• Infinite +1/+1 counters on Scurry Oak
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite proliferate
• Infinite sacrifice triggers