Soulsquad Mercenaries

Whenever a vehicle enters the battlefield under your
control, create a 1/1 black shade enchantment
creature token with Possess {4}{b} and "Enchanted
artifact becomes a creature in addition with +X/X,
where X is its mana value." attached to it. (If you
cast this card for its possess cost, it's an Aura spell
with enchant artifact. It becomes a creature again if
it's not attached to an artifact. This ability costs {2} less when targeting an artifact creature.)