Staff of the Wanderer

Whenever you cast a multicolored spell untap
Staff of the Wanderer.
{x}{b},{t}: Target creature gets -X/-X.
{1}{w},{t}: Destroy target enchantment.
{1}{r},{t}: Destroy target artifact.
{2}{g},{t}: Return target card from your
graveyard to your hand.
{3}{u},{t}: Copy target instant or sorcery.
You may choose new targets for the copy.