The Diamond's Soul
Pillgrim observed the Khor warriors unrelentingly beating the Troll, striking him with all their might without being able to pierce the monster's thick hide. The stone set in the One-Eyed's empty socket started to glow. No need to cut the skin to crush the bones!
2 Earth 
Path: Lithomancy
Range: Personal
Difficulty: 6
Duration: Until end of round
Area of Effect: Personal
Frequency: 2
Intensity: 1
A.P.: 11
When under the spell's influence the targeted fighter feels a devastating power flow in his veins. house one of his Attack dice during the next Hand-to-Hand Combat phase. This die must be chosen before the spell's beneficiary makes his Attack Rolls. If the Attack symbolized by the chosen die succeeds and isn't parried, it is considered as being Master Strike / 0. This effect remains the same even if the fighter already has the Master Strike ability of a different value. An Attack generated following a Counter-Attack can also be designated in the same way.
Whatever the case may be, this spell's effect dissipates at the end of the round.