Rainbow Rocket Punch

Use this only once per combat. To use this,
you must spend one turn (~10 secs) charging.
While charging, you can't take any physical
actions, or move > 5 ft, but you can still take
non-physical actions. After charging, you
spring toward the target at double speed. Roll
opposed GRACE. If your result is higher, the
attack lands, dealing heavy damage and
sundering. If your result was lower, or you
rolled less than a full success, lose one Health.