Arthas Menethil

The mana cost for this card can only be payed in one color.
If payed with {w}: Arthas becomes a 5/6
Human Knight with Vigilance and Lifelink
If payed with {b}: Arthas becomes a 6/5
Undead Knight with Deathtouch and Pay 1 life and {b}{b}{b} Return Arthas to your hand.