Errant Gatekeeper

Infiltrate — As long as this creature is controlled
by a player other than its owner, at the
beginning of combat on your opponent's turn,
that player chooses a creature they control. That creature can't be blocked this turn.
When you gain control of Errant Gatekeeper, if
you own it, draw a card.
Skip your next combat step: Target opponent
gains control of Errant Gatekeeper.