Storm Elemental Dragon

Flying, Hexproof, Trample.
If a creature you control would be exiled, target opponent must either pay {3} or 3 life, if not the creature is not exiled.
{u}{b}{b}{r}: Give one creature you control +2/+2
and Lifelink.
{u}{u}{b}{b}{b}{b}{r}{r}{r}: Storm Elemental Dragon
gains Indestructible until your next upkeep.