Barbie, the Lich Master

You have Hexproof and no maximum hand size
{p/r}{p/r}{p/r} -Deal X damage to any target
{p/b}{p/b}{p/b} -Destroy X target creatures
{p/b}{p/b}{p/g}{p/g}{p/r}{p/r}{p/u}{p/u}{p/w}{p/w} -
You gain X+5 life, destroy up to X+5 target
creatures, draw X+5 cards, and add
{w}{u}{b}{r}{g} to your mana pool