Spectacle {3}{B}{R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)

Doublestrike, Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked with a creature this combat.)

When Ares enters the battlefield, if its spectacle cost was paid, create Ares's Boon attached to target creature you control. (If you control another Boon on it, put that one into the graveyard. Enchanted creature gets +1/+1 for each opponent)