Temple of the Crystal Gems

{t} to generate 1 mana of any color.
{t}{2}{w}, you gain 3 life.
{t}{2}{u}, draw a card then discard a card.
{t}{2}{b}, put a -1/-1 counter on a target creature.
{t}{2}{r}, target creature you control gains Haste until end of turn.
{t}{2}{g}, put a +1/+1 counter on a creature you control.