If a creature makes an attack roll or an ability check with advantage, how is it affected by the bard's Cutting Words?
a) The number rolled by the bard is substracted from the highest of both d20, leaving two results from which the creature can still take the highest?
b) The creature takes the highest of both d20 then substracts the number rolled by the bard?
Best Answer
The relevant rules are:
Specific beats general in D&D 5e so the Advantage/disadvantage rule, being the more general, is applied first. Therefore, "the creature’s roll" in the Cutting words description is the end result of the advantage/disadvantage mechanic - there is only one "creature's roll" even though two dice are used in generating it.
This is the mechanic for all applications of bonuses/penalties to a roll irrespective of if they are static (like proficiency modifier) or random (like Bless)