Infinite LTB, Infinite ETB, Infinite sacrifice triggers, Infinite death triggers, Infinite colorless mana
Activate Ashnod's Altar by sacrificing Otherworldly Escort.
When Otherworldly Escort dies, it triggers, returning itself from your graveyard to the battlefield as a Spirit Detective.
Resolve the Ashnod's Altar ability.
Activate Ashnod's Altar by sacrificing Otherworldly Escort.
When Otherworldly Escort dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
Repeat.
Component Cards
How It Works
Activate Ashnod's Altar by sacrificing Otherworldly Escort.
When Otherworldly Escort dies, it triggers, returning itself from your graveyard to the battlefield as a Spirit Detective.
Resolve the Ashnod's Altar ability.
Activate Ashnod's Altar by sacrificing Otherworldly Escort.
When Otherworldly Escort dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
Repeat.