1Activate Ashnod's Altar by sacrificing Tithe Taker, adding .
2When Tithe Taker dies, its afterlife ability and Nim Deathmantle trigger.
3Resolve the Tithe Taker trigger, creating a 1/1 Spirit creature token.
4Activate Ashnod's Altar by sacrificing the Spirit, adding .
5Resolve the Nim Deathmantle trigger from step 2, causing you to pay to return Tithe Taker from your graveyard to the battlefield, and attach Nim Deathmantle to it.