1Activate Ashnod's Altar by sacrificing The Swarmweaver, adding .
2When The Swarmweaver dies, Nim Deathmantle triggers, causing you to pay to return The Swarmweaver from your graveyard to the battlefield and attach Nim Deathmantle to it.
3When The Swarmweaver enters, it triggers, creating two creature tokens.
4Activate Ashnod's Altar by sacrificing a creature token, adding .