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 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"