Activate Aron by paying {W}{B}, tapping it and sacrificing another creature.
The creature dies, triggering Aron and Pitiless Plunderer.
Resolve the Aron trigger, untapping it.
Resolve the Pitiless Plunderer trigger, creating a Treasure token.
Activate Krark-Clan Ironworks by sacrificing the Treasure token, adding {C}{C}.
Resolve the Aron ability from step 1, causing you to put a +1/+1 counter on each creature you control.
Animation Module triggers for each counter placed this way.
Resolve the first Animation Module trigger, causing you to pay {1} to create a 1/1 Servo artifact creature token.
Repeat step 8 for each remaining trigger.
Activate Krark-Clan Ironworks by sacrificing a Servo, adding {C}{C}.
The Servo dies, triggering Aron and Pitiless Plunderer.
Resolve the Aron trigger, untapping it.
Resolve the Pitiless Plunderer trigger, creating a Treasure token.
Repeat steps 10 through 13 until you only control one Servo.
Activate two Treasure tokens by tapping and sacrificing them, adding {W}{B}.
Repeat.

Infinite artifact ETB

Infinite artifact LTB

Infinite artifact sacrifice triggers

Infinite artifact tokens

Infinite colored mana

Infinite colorless mana

Infinite creature tokens

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite creature sacrifice triggers

Infinite Treasure tokens

Infinite +1/+1 counters on creatures you control

Aron, Benalia's Ruin

Animation Module

Pitiless Plunderer

Thornbite Staff

Krark-Clan Ironworks

Activate Aron by paying {W}{B}, tapping it and sacrificing another creature.
The creature dies, triggering Aron and Pitiless Plunderer.
Resolve the Aron trigger, untapping it.
Resolve the Pitiless Plunderer trigger, creating a Treasure token.
Activate the Treasure token by tapping and sacrificing it, adding {1}.
Resolve the Aron ability from step 1, causing you to put a +1/+1 counter on each creature you control.
Animation Module triggers for each counter placed this way.
Resolve the first Animation Module trigger, causing you to pay {1} to create a 1/1 Servo artifact creature token.
Repeat step 8 for each remaining trigger.
Activate Ashnod's Altar by sacrificing a Servo, adding {C}{C}.
The Servo dies, triggering Aron and Pitiless Plunderer.
Resolve the Aron trigger, untapping it.
Resolve the Pitiless Plunderer trigger, creating a Treasure token.
Repeat steps 10 through 13 until you only control one Servo.
Activate two Treasure tokens by tapping and sacrificing them, adding {W}{B}.
Repeat.

Ashnod's Altar

Combos with "Aron, Benalia's Ruin"