Warbeast of Gorgoroth + Doubling Season + Altar of Dementia

Prerequisites

• You control another creature with power four or greater.

Steps

1. 1Activate Altar of Dementia by sacrificing the creature with power four or greater.
2. 2The creature dies, triggering Warbeast of Gorgoroth, creating a 0/0 Army creature token if you don't control one, then putting four +1/+1 counters on an Army you control.
3. 3Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.
4. 4Repeat.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill