Magical Crewmates

Target one creature you control. Take two cards
from your hand, shuffle them and the target, and
place them upside down on the battlefield. They
cannot attack, but they can block. If an upside
down card is blocked with, reveal the card. If it's
the target, combat goes as usual. If not, you may
cast it immediately or return it to your hand. At
the start of your next upkeep, reveal all the cards,
and return all of them but the target to the hand.
This card cannot be the target of Vent
"