Sky Legion Fortress

As Sky Legion Fortress enters the battlefield, you
may reveal a Legendary Knight card from your
hand. Sky Legion Fortress enters the battlefield
tapped unless you revealed a Legendary Knight
card this way or you control a Legendary Knight.
{t}:Add {w} or {u}
{2}{w}{u}: Until end of turn, Sky Legion Fortress becomes a 2/2 white and blue Knight creature
with flying, vigilance, and "Whenever this
creature deals combat damage to a player, draw a
card, then discard a card." It's still a land.