Pitiless Plunderer + Eternal Witness + Mitotic Slime + Nethroi, Apex of Death + Yahenni, Undying Partisan

5-card combo · WBG

Verdict

Yes — this 5-card Nethroi loop generates infinite mana, infinite death triggers, and infinite tokens in any Abzan mutate shell that can recur its pieces.

Cards required: 5
Cheapest stack total: $5.97
Color identity: WBG
Popularity: 1 decks
Format: Commander

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Nethroi, Apex of Death's mutate trigger reanimates Eternal Witness and Mitotic Slime; Eternal Witness returns Nethroi to hand while Pitiless Plunderer converts every sacrifice into a Treasure. Mitotic Slime's death chain snowballs the Ooze count fast enough that Yahenni, Undying Partisan grows indestructible repeatedly and the Treasure pile refunds the full mutate cost each loop. The loop runs through Yahenni as the sacrifice outlet, so it demands all five pieces on board or in the graveyard before it fires.

Recipe

How it works

Prerequisites

You control at least one other non-Human creature.

Steps

Cast Nethroi either from your hand or from the command zone for its mutate cost by paying plus commander tax, if applicable, putting it on top of a non-Human creature you control.
When Nethroi enters the battlefield, it triggers.
Holding priority, activate Yahenni by sacrificing Nethroi.
When Nethroi dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
Resolve the Yahenni ability, giving it indestructible until end of turn.
Resolve the Nethroi trigger from step 2, returning Eternal Witness and Mitotic Slime from your graveyard to the battlefield.
When Eternal Witness enters the battlefield, it triggers, returning Nethroi from your graveyard to your hand.
Activate Yahenni twice by sacrificing Eternal Witness and Mitotic Slime.
When Eternal Witness and Mitotic Slime die, Pitiless Plunderer triggers twice and Mitotic Slime triggers once.
Resolve both Pitiless Plunderer triggers, creating two Treasure artifact tokens.
Resolve the Mitotic Slime trigger, creating two 2/2 Ooze creature tokens.
Resolve both Yahenni abilities, giving it indestructible until end of turn.
Activate Yahenni twice by sacrificing two Oozes.
When the Oozes die, they each trigger and Pitiless Plunderer triggers twice.
Resolve both Pitiless Plunderer triggers, creating two Treasure artifact tokens.
Resolve both Ooze triggers, creating four 1/1 Ooze creature tokens.
Resolve both Yahenni abilities, giving it indestructible until end of turn.
Activate Yahenni twice by sacrificing two Oozes.
When the Oozes die, Pitiless Plunderer triggers twice, creating two Treasure artifact tokens.
Resolve both Yahenni abilities, giving it indestructible until end of turn.
Activate the seven Treasures by tapping and sacrificing them, adding .
Repeat.

Result

Infinite colored mana; Infinite creature tokens; Infinite death triggers; Infinite ETB; Infinite LTB; Infinite sacrifice triggers; Infinite storm count; Infinite Treasure tokens

Variations

Cheaper, tighter, alternate lines

Viscera Seer or Altar of Dementia can replace Yahenni as the free sacrifice outlet if Yahenni draws removal before the loop starts, though neither survives the loop the way Yahenni does. Once infinite mana is floating, Walking Ballista or Torment of Hailfire closes the game — the combo produces the resources, it does not win by itself.