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

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite sacrifice triggers

Nim Deathmantle

Ashnod's Altar

Tithe Taker

Cast Lethal Vapors by paying {2}{B}{B}.
Activate Lethal Vapors an arbitrarily large number of times.
Cast Teferi's Protection by paying {2}{W}: until your next turn your life total can't change and you have protection from everything.
Allow all the activated abilities from Lethal Vapors to resolve, skipping an arbitrarily large number of turns.

Skip all of your future turns, causing your opponents to eventually draw from an empty library and lose the game

You have protection from everything

Your life total can't change

Lethal Vapors

Teferi's Protection

Activate Ashnod's Altar by sacrificing the Tithe Taker to add {C}{C}.
Tithe Taker triggers, creating 1/1 white and black Spirit token.
Activate Ashnod's Altar by sacrificing the Spirit token to add {C}{C}.
Activate Prismite by paying {1} to add {B}.
Activate Kenrith by paying {2}{B} to return Tithe Taker from your graveyard to battlefield.
Repeat.

Infinite colored mana

Infinite colorless mana

Infinite lifegain triggers

Infinite lifegain

Infinite +1/+1 counters

Infinite card draw for any number of players

Put all creature cards from all graveyards onto the battlefield under your control

Combos with "Tithe Taker"