Xyliph the Bridged Flame

Flying
Discard a card: Until end of turn, Xyliph, the
Bridged Flame becomes a Human with base
power and toughness 1/1, loses all abilities,
and gains hexproof. Creature spells with
Champion cost {2} less to cast.
Dragon creature spells you cast have Champion
a Human. (When this enters the battlefield,
sacrifice it unless you exile another creature you
control. When this leaves the battlefield, that
card returns to the battlefield.)