Elvish Vatkeeper

{1}{B}{G}
Creature — Phyrexian Elf

When Elvish Vatkeeper enters the battlefield, incubate 2. (Create an Incubator token with two +1/+1 counters on it and "{2}: Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

{5}: Transform target Incubator token you control. Double the number of +1/+1 counters on it.

Set March of the Machine
Rarity Uncommon