Vizier of Remedies + Altar of Dementia + Obstinate Gargoyle

Vizier of Remedies

Altar of Dementia

Obstinate Gargoyle

How it works

1. Activate Altar of Dementia by sacrificing Obstinate Gargoyle.
2. When Obstinate Gargoyle dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Vizier of Remedies.
3. Resolve the Altar of Dementia ability
4. Repeat.

This clever loop uses Altar of Dementia as a repeatable sacrifice outlet that turns your creature into a devastating mill machine, forcing an opponent to mill cards equal to the sacrificed power over and over again. The true engine that makes this infinite is Vizier of Remedies, whose static replacement ability prevents Obstinate Gargoyle from accumulating the -1/-1 counters that would normally shut down its persist ability permanently. Because the Gargoyle returns to the battlefield completely free of counters each time, it can be sacrificed endlessly to fuel the Altar's mill until your opponent's entire library is in the graveyard.