Deal damage to an opponent.
The Red Terror triggers, putting a +1/+1 counter on itself.
All Will Be One triggers, dealing 1 damage to an opponent.
Repeat from step 2.

Infinite damage

Infinite +1/+1 counters on a creature

All Will Be One

The Red Terror

Put a +1/+1 counter on a creature you control.
Shalai and Hallar triggers, dealing 1 damage to an opponent.
The Red Terror triggers, putting a +1/+1 counter on itself.
Repeat from step 2.

Shalai and Hallar

Activate The Red Terror using Walking Ballista's second ability by removing a +1/+1 counter from it, dealing 1 damage to any target.
The Red Terror triggers, putting a +1/+1 counter on it.
Repeat.

Agatha's Soul Cauldron

Walking Ballista

Cause a creature to enter the battlefield under your control.
Impact Tremors triggers, dealing 1 damage to each opponent.
The Red Terror triggers, putting a +1/+1 counter on itself.
Animation Module triggers, causing you to pay {1} to create a 1/1 Servo artifact creature token.
When the Servo enters, Impact Tremors triggers.
Holding priority, activate Ashnod's Altar by sacrificing the Servo, adding {C}{C}.
Resolve the Impact Tremors triggers, dealing 1 damage to each opponent.
Repeat from step 3.

Infinite LTB

Infinite ETB

Infinite sacrifice triggers

Infinite death triggers

Infinite colorless mana

Animation Module

Ashnod's Altar

Impact Tremors

Cause a creature to enter the battlefield under your control.
Terror of the Peaks triggers, dealing damage to an opponent equal to the creature's power.
The Red Terror triggers, putting a +1/+1 counter on itself.
Animation Module triggers, causing you to pay {1} to create a 1/1 Servo artifact creature token.
When the Servo enters the battlefield, Terror of the Peaks triggers.
Holding priority, activate Krark-Clan Ironworks by sacrificing the Servo, adding {C}{C}.
Resolve the Terror of the Peaks trigger, dealing 1 damage to an opponent.
Repeat from step 3.

Combos with "The Red Terror"