Pitiless Plunderer
Eternal Witness
Mitotic Slime
Nethroi, Apex of Death
Bartolomé del Presidio

   Prerequisites

What do I need to start this combo?
Nethroi in hand or in the command zone.
Pitiless Plunderer and Bartolomé del Presidio on the battlefield.
Eternal Witness and Mitotic Slime in your graveyard.
You control at least one non-Human creature.
4gw plus enough mana to pay for commander tax, if applicable available

   Steps

How does this combo work?
1
Cast Nethroi either from your hand or from the command zone for its mutate cost by paying 4gw plus commander tax, if applicable, putting it on top of a non-Human creature you control.
2
When Nethroi enters the battlefield, it triggers.
3
Holding priority, activate Bartolomé del Presidio by sacrificing Nethroi.
4
When Nethroi dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
5
Resolve the Bartolomé del Presidio ability, putting a +1/+1 counter on it.
6
Resolve the Nethroi trigger from step 2, returning Eternal Witness and Mitotic Slime from your graveyard to the battlefield.
7
When Eternal Witness enters the battlefield, it triggers, returning Nethroi from your graveyard to your hand.
8
Activate Bartolomé del Presidio twice by sacrificing Eternal Witness and Mitotic Slime.
9
When Eternal Witness and Mitotic Slime die, Pitiless Plunderer triggers twice and Mitotic Slime triggers once.
10
Resolve both Pitiless Plunderer triggers, creating two Treasure artifact tokens.
11
Resolve the Mitotic Slime trigger, creating two 2/2 Ooze creature tokens.
12
Resolve both Bartolomé del Presidio abilities, putting two +1/+1 counters on it.
13
Activate Viscera Seer twice by sacrificing two Oozes.
14
When the Oozes die, they each trigger and Pitiless Plunderer triggers twice.
15
Resolve both Pitiless Plunderer triggers, creating two Treasure artifact tokens.
16
Resolve both Ooze triggers, creating four 1/1 Ooze creature tokens.
17
Resolve both Viscera Seer abilities, causing you to scry 1 twice.
18
Activate Bartolomé del Presidio twice by sacrificing two Oozes.
19
When the Oozes die, Pitiless Plunderer triggers twice, creating two Treasure artifact tokens.
20
Resolve both Bartolomé del Presidio abilities, putting two +1/+1 counters on it.
21
Activate the seven Treasures by tapping and sacrificing them, adding 4gw.
22
Repeat.

   Results

What do I get from this combo?
Infinite +1/+1 counters on a creature
Infinite colored mana
Infinite creature tokens
Infinite death triggers
Infinite ETB
Infinite LTB
Infinite sacrifice triggers
Infinite storm count
Infinite Treasure tokens
Nethroi, Apex of Death
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