Q: What are masterwork rolls?
A: Most legendary weapons are capable of being Masterworked. The masterwork system is a way for you to upgrade your favorite weapons to their maximum potential.
Q: What does it take to upgrade a weapon to a masterwork?
A: Upgrading your weapons, in broad terms, takes a small amount of glimmer, legendary shards, and, most importantly, Enhancement Cores.
Depending on what Tier your weapon is at, the requirements to raise it to the next tier increase the closer the weapon is to being fully masterworked (Tier 10).
Q: What benefits do I get for masterworking a weapon?
A: Each tier that you increase your weapon will grant a small buff to a single stat, chosen randomly when the item drops.
Beyond that, at Tier 5 you gain access to a kill tracker. At Tier 10, your multi-kills will generate orbs of light.
Q: So what are these "masterwork roll" stats?
A: These are the possible stats that upgrading your weapon will grant a bonus to. Depending on what tier you are at, you can grant anywhere from 1-10 additional points in any of the stats listed to your weapon.
Q: Any catch with this?
A: The Bungie API currently says that all weapons can potentially roll with all stats as their masterwork stat. This obviously isn't accurate, as Blast Radius isn't applicable to, say, Auto Rifles.
The list you see on this page is trimmed to only show stats that actually appear on the weapon. However, it is possible that Bungie has additional logic behind the scenes that further filters these
possibilities to, for example, prevent certain items from being able to have an Impact masterwork. Until Bungie modifies the API files to 100% accurately display which masterwork stats are possible on
each item, take what you see here with a pinch of salt.
Like people have mentioned here already, you have Forbearance that-
a. Does not waste an exotic slot
b. Is better in general
It is still a good weapon with good coverage and being able to switch elements is always an added plus, but still, this being an exotic, it should've incorporated the ability to set the elemental effects based on the element you are using (i.e Solar-Scorch, Arc-Jolt and Void-Volatile), this might be too OP but making this do one wave instead of three could've negated the power creep and make this a very viable option for those who do not want to raid / do VotD.
PVP-
Is still king of trolls, this has amazing ground coverage and can be the ultimate anti-flanker or the ultimate flanker/aggro given the player. (with a fast switching SMG / HC for the cleanup)
Crazy good in 1 on 1 situations. I should note that the waves have shorter length than single wave GLs, should be used with that in mind.
As far as rolls go, go for max Handling and Velocity, blast radius means nothing on WF GLs.
Demolitionist is king for PVE, for PVP I think I'd choose Unrelenting for that quick recov after an encounter. (could also be applicable to end game PVE content)
Overall a fantastic weapon that gets overshadowed by the craft-able legendary Forbearance, Waveframe + Chain Reaction is still ridiculously overpowered.
You can argue that the elemental switch is enough, but Forbearance can clear everything even though it is Arc and shoots only one wave instead of three.
Furthermore, Match Game is gone from Destiny for good, meaning we do not need three elements on demand for endgame content anymore.