Dragon's Mountain - Technique
k B Iron in the Mountains Style
Rank: 4
Activation: When you make a Martial Arts [Melee, Ranged, or Unarmed] (Earth) check, you may spend L in the following way:
Earth L+: One target of your action must resist with a TN 3 Fitness check (Air 1, Water 4) or suffer the Prone condition and fatigue equal to their shortfall. Increase the TN of the check to resist by 1 per L spent this way.
Source: Core Book Pg. 176