You can shatter large boulders coming your way. 

• When you are hit, you may use this Technique to increase the die size used in your Block Reaction twice. Use the following die size progression: d4 → d6 → d8 → d10. 

   

• You may also use this Technique on a target within range. In that case, they reduce the damage taken by 1d6, regardless of what reaction (if any) they used.

   

•  This technique works only against stone-based projectiles

   

Because this Technique requires fast, precise aura control, it uses up your Concentration.