Arebrias, Hero Monger

Indestructible
As long as your devotion to red or white is less
than seven, Arebrias isn't a creature.
{3}{r/w}{r/w}: Creatures you control gain double strike
until the end of the turn.
As long as Arebrias is a creature, whenever he
attacks for the first time each turn, untap all creatures you control. After this phase, there is
an additional combat phase.