Kyra, the First Dragon Knight

Deathtouch, lifelink, haste
Whenever Kyra comes into play, search your
library for a legendary dragon card and put it
into play. Then shuffle your library. Attach
Kyra to that creature. Ridden creature gets
+3/+3 and has deathtouch, lifelink and haste.
Ride a dragon {2} (Attach this card to a unridden
creature you control of the named tribe, ride only as a sorcery.)