Empower Strike (True Strike Improvement)

you concentrate on your weapon and your own abilities, gradually increasing as the spell persists. for every round that you concentrate on this spell without attacking, you gain a bonus to the next melee attack roll you make equal to your spell attack bonus, and it increases every round by your spell attack bonus. when you hit a creature with your empowered strike, you deal the extra damage and add the extra attack modifier, after that you lose all bonuses to the spell until you channel again.

if you hit a creature and don't hit the attack, you must roll a D100, on an 25 or higher, your weapon breaks if it isn't magical or have a magical attachment such as oil of sharpness or using a flame tongue.