Ygra, Eater of All, Camellia, the Seedmiser, and Altar of Dementia

Prerequisites

• Ygra, Eater of All on the battlefield
• Camellia, the Seedmiser on the battlefield
• Altar of Dementia on the battlefield
• You control at least one additional creature

Steps

1. Activate Altar of Dementia by sacrificing any other creature
2. Because the creature is a Food due to Ygra, when it dies, Camellia and Ygra trigger
3. Resolve the Ygra trigger, putting two +1/+1 counters on it
4. Resolve the Camellia trigger, creating a 1/1 Squirrel creature token
5. Resolve the Altar of Dementia ability, dealing damage equal to its power to any target
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill
• Infinite +1/+1 counters on Ygra