Culumative Attack

You have learned how to focus all your energy and release it in one attack.

If you may attack multiple times per attack action, as with the extra attack feature, you may instead make a single  culumative attack, and roll damage dice based on how many times you could attack normally. For example, if you could attack three times per attack action, and you did so with a sword, you instead deal 3d8 slashing damage on hit. Any modifiers to damage, such as your relevant ability score modifier, sneak attack, or spells that boost damage per attack are only applied once.

You may preform a culumative attack once per turn.