Seath, The Pale Dragon

Flying, Flash
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever you cast this spell, you draw X cards
and gain X life.
Seath allied with Lord Gwyn and turned upon the dragons, and for this he was awarded Dukedom,
embraced by the royalty, and given a fragment of a
great soul.