Illidan Stormrage

Level-Up 15 ({b/g}{b/g}: Illidan becomes a 6/6 with
first strike.)
Level-Up 30 ({b/g}{b/g}{b/g}{b/g}: Illidan becomes a 8/8 with
first strike, lifelink and vigilance.)
Level-Up 60 ({4}{b/g}{b/g}{b/g}{b/g}: Illidan becomes a 10/10
with first strike, lifelink, vigilance and flying. It gets
the ability metamorphosis {b/g}{b/g}: Illidan becomes a
demon in addition and gets every ability from any
demon in play. Destroy target creature.)