ReMonk(9) Thunder God's Execution

This is a part of a larger project to re-do the monk class in DnD Beyond. If you want more details search for ReMonk Base in Fighter Subclasses

You've learned only strong foes can help push your Martial Arts to the next level. You've developed a technique to swiftly crush weak and vulnerable enemies. When an enemy is prone within melee range on your turn you can choose to forego all extra attacks and advantage on attack rolls to perform a single unarmed attack that deals 8d8 + your damage modifier in Thunder Damage. The damage increases to 10d8 at level 11 and to 12d8 at level 20. Additionally, you can now choose to make your unarmed strikes deal Thunder damage.