Requires

Nim Deathmantle must be on the battlefield. Ashnod's Altar must be on the battlefield. Propeller Pioneer must be on the battlefield. Mana needed:

Steps

1. Activate Ashnod's Altar by sacrificing Propeller Pioneer, adding .
2. When Propeller Pioneer dies, Nim Deathmantle triggers, causing you to pay to return Propeller Pioneer from your graveyard to the battlefield, and attach Nim Deathmantle to it.
3. When Propeller Pioneer enters the battlefield, its fabricate ability triggers, creating a 1/1 Servo artifact creature token.
4. Activate Ashnod's Altar by sacrificing the Servo, adding .
5. Repeat.

Results