Serina

A.I. (When this card is not enchanted to
something, it becomes a creature with its power
and toughness equal to its converted mana cost).
{4}: Enchant target permanent.
If this card is enchanted to a vehicle, it is
considered crewed.
If Serina is enchanted to an Artifact Vehicle it
gains "When this creature deals combat damage
to a creature, tap that creature. It doesn't untap
during its controller's next untap step."