Hinokami Kagura

At the beginning of your upkeep, put a breath counter on a creature you control.
Creatures you control with breath counters on them have "Twelfth Form- Flame Dance Form of
Sun Breathing - Until end of turn, whenever this creature attacks for the first time this turn, you may exert it. If you do, untap all other creatures you control. You get an additional combat step after this one.