Dorn, Bloodmage Cavalier

Whenever Dorn, Bloodmage Cavalier attacks,
you may reveal the top card of your library. If its
a creature card, you may put it onto the
battlefield tapped and attacking.
As long as an attacking creature has flying,
Dorn, Bloodmage Cavalier has flying. The same
is true for first strike, double strike, deathtouch,
haste, hexproof, indestructible, lifelink, menace,
protection, reach, trample, and vigilance.