Share the Wealth

You can't gain life. If you were to gain life, each opponent gains that much life instead and you may pay
{1}{w}: Target player draws that many cards.
{1}{u}: Target player mills that many cards.
{1}{b}: Return that many permanents you own in exile or your graveyard to your hand.
{1}{r}: Deal that much damage to any target.
{1}{g}: Put that many +1/+1 counters on target creature.