Infinite death triggers, Infinite ETB, Infinite LTB, Infinite sacrifice triggers
Activate Ashnod's Altar by sacrificing Headless Rider, adding .
When Headless Rider dies, it and Nim Deathmantle trigger,
Resolve the Headless Rider trigger, creating a creature token.
Holding priority, activate Ashnod's Altar by sacrificing a creature token, adding .
Resolve the Nim Deathmantle trigger, causing you to pay to return Headless Rider from your graveyard to the battlefield and attach Nim Deathmantle to it.
Repeat.
Component Cards
How It Works
Activate Ashnod's Altar by sacrificing Headless Rider, adding .
When Headless Rider dies, it and Nim Deathmantle trigger,
Resolve the Headless Rider trigger, creating a creature token.
Holding priority, activate Ashnod's Altar by sacrificing a creature token, adding .
Resolve the Nim Deathmantle trigger, causing you to pay to return Headless Rider from your graveyard to the battlefield and attach Nim Deathmantle to it.
Repeat.