Double Iron Bash

You punch twice with two devastating slams of your fist. Make two melee attack rolls, doing 1d6 + MOVE steel damage on each successful hit. If any natural attack roll is 16 or higher, the target flinches.

At Higher Levels: The damage dice rolls for this move changes to 2d6 at level 5, 4d4 at level 10, and 3d10 at level 17.