Roar of the Avatar

{t},{1}, pay 3 life: add 2 mana in any combination
of colors. Spend this mana only to cast Avatar
spells or activate abilities of Avatars.
Sacrifice Roar of the Avatar: Target Avatar card
with a mana value of 6 or more gains double
strike, trample, and annihilator X, where X is
the number of enchantments you control that
have bending form, until the end of turn.