Iron Tail

You swing your tail out, attempting to crush a creature. Make an attack roll on a creature in range, doing 4d4 + MOVE steel damage on a hit. If the natural attack roll is a 19 or 20, the target’s AC is decreased by 1 for the rest of combat.

At Higher Levels: The damage dice roll for this move changes to 2d12 at level 5, 4d8 at level 10, and 8d6 at level 17.