Quartz Cave

({w/b} can be spent with {w} or {b} mana only)
Whenever you cast an instant or sorcery, each creature you control gains +2/+3 until end
of turn.
Whenever a creature is put into an opponent's graveyard, you
may return a target creature card from your
graveyard to your hand. It costs {2} less mana to
cast.