Horizon of Misty Depths

Diving 4 (At the beginning of your upkeep, put a
dive counter on this. At the beginning of your endstep,
if this has 4 or more dive counters on it, exile it and
draw four cards.)
As long as a Vehicle attacked this turn, you may
cast Horizon of Misty Depths from exile as
though it had flash.
Crew 4.