Autonomous Assembler is a rare Artifact Creature — Assembly-Worker card from Magic: The Gathering (Magic Online Promos, PRM).
Rare
Magic Online Promos (PRM)
{5}
Power / Toughness
4 / 5
Mana Value
5
Card Text
Prototype {1}{W} — 2/2 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)
Vigilance
{1}, {T}: Put a +1/+1 counter on target Assembly-Worker you control.
