Headbutt

You really know how to use your head. Make a melee attack roll, doing 1d12 + MOVE normal damage on a hit. If the natural attack roll is 18 or more, the target falls prone.

At Higher Levels: The damage dice roll for this move changes to 2d8 at level 5, 2d12 at level 10, and 6d6 at level 17.