Activate Ashnod's Altar by sacrificing Visionary Augmenter, adding {C}{C}.
Visionary Augmenter dies, triggering Nim Deathmantle, causing you to pay {4} to return Visionary Augmenter from your graveyard to the battlefield, and attach Nim Deathmantle to it.
Visionary Augmenter enters the battlefield, creating two 1/1 Servo creature tokens.
Activate Ashnod's Altar by sacrificing a Servo, adding {C}{C}.
Repeat.

Infinite colorless mana

Infinite creature tokens

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite sacrifice triggers

Visionary Augmenter

Nim Deathmantle

Ashnod's Altar

Activate Phyrexian Altar by sacrificing Visionary Augmenter.
When Visionary Augmenter dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
When Visionary Augmenter enters, its fabricate ability triggers, putting a +1/+1 counter on it.
Repeat.

Infinite colored mana

Effects that Alter a Creature's Power/Toughness (Anthem Effects)

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight

Phyrexian Altar

Activate the basic land by tapping it, adding {1}.
Activate Emiel by paying {3}, blinking Visionary Augmenter.
Visionary Augmenter enters the battlefield triggering its Fabricate ability, choosing to create two 1/1 Servo artifact creature tokens.
Activate Earthcraft by tapping Visionary Augmenter, untapping the basic land.
Activate the basic land by tapping it, adding {1}.
Activate Earthcraft by tapping a Servo token, untapping the basic land.
Activate the basic land by tapping it, adding {1}.
Activate Earthcraft by tapping a Servo token, untapping the basic land.
Repeat.

Infinite tapped creature tokens

Emiel the Blessed

Earthcraft

Combos with "Visionary Augmenter"