Wanting to make a clarification on just what this ability does as my friend and I are having a discussion and part of it just seems off, possibly due to lack of key words. But, it might be written as intended.
So Flurry of Devastation mentions that you can make attacks out to 120ft. But, it doesn't explicitly state whether they be melee or ranged attacks as Devastating Infusion does. As such, his understanding is that you can make a Full Attack with the benefits of Two Weapon Fighting out to 120ft with melee attacks. My reasoning as to why it wouldn't allow the 120ft melee attack is because it is still a melee attack, and melee attacks rely on your melee reach.
As is, the wording is in favor of his interpretation, as it never specifically states if the 120ft is applied only to the ranged attack variant or not. The ability to attack things within 120ft is part of a Flurry of Devastation.
Any help would be appreciated.