Crystal Protector

{w/u}{w/u}: Crystal Protector Is A Creature Until The End Of Your Opponents Next Turn.
{1}{w/u}{t}: Target Gem Beast You Control Gains Hexproof And Indestructible This Turn. Play This Ability Only If Protector is An Enchantment.
{1}{w/u}{t}: Sacrifice Protector, Target Gem Beast Creature You Control That Has Been Blocked Doubles Its Power and Toughness Until The End Of Your Opponents Next Turn.