Infinite -1/-1 counters, Infinite death triggers, Infinite ETB, Infinite LTB, Infinite mill, Infinite sacrifice triggers, Infinite self-mill
Activate Altar of Dementia by sacrificing Soulstinger.
When Soulstinger dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
When Soulstinger enters the battlefield, it triggers, putting a -1/-1 counter on it.
Resolve the Altar of Dementia ability
Repeat.
Component Cards
How It Works
Activate Altar of Dementia by sacrificing Soulstinger.
When Soulstinger dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
When Soulstinger enters the battlefield, it triggers, putting a -1/-1 counter on it.
Resolve the Altar of Dementia ability
Repeat.