Mikaeus, the Unhallowed + Altar of Dementia + Solemnity

Prerequisites

• You control at least one additional nontoken, non-Human creature that does not have a +1/+1 counter on it.

Steps

1. 1Activate Altar of Dementia by sacrificing the additional creature.
2. 2When the creature dies, its undying ability triggers, returning it to the battlefield from your graveyard with zero +1/+1 counters due to Solemnity.
3. 3Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to the sacrificed creature's power.
4. 4Repeat.

Effects

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