You didn't answer my question, I'll try to rephrase it because it's an important one as noted in 228 how rogues already have the ability to add +dice using magic items like I mentioned & linked.Oh come on.
Arguing a class can't get a class feature because there's an item completely ignores
a) other classes can use that item too
b) you can never assume you're going to get any specific item (in pen and paper 5E), that's just videogame thinking
c) handing out a melee item but not a ranged version is a kind of "stealth balancing" I disapprove of. A player should not have to know there exists a certain desirable item but only in some forms, in order to assess their build choices.
Why are you reflexively against more sneak dice?
Why are you framing this as a "need" that you get to question?
The rogue has a class feature. This class feature has absolutely no boosters. This is highly curious, especially since it is abundantly clear it isn't a balance issue.
What's the frakkin deal with WotC being so dead set against higher sneak damage that they don't even think about it? Is it natural or obvious? No! There's no reason for this that I can think of.
Instead the obvious outcome would have been for there to be a sprinkling of items or abilities or spells that enhance sneak attack damage just as there is for about every other conceivable dimension of the game.
Why does not a pair of ear flappers that increases the size of your sneak dice from d6s to d8s exist? A spell that grants one additional sneak die. A subclass that increase the number of sneak dice by your proficiency bonus, maybe.
Something. Anything.
Back in prior editions there was a higher bar to getting off a sneak attack were a lot more nuanced damage types that sometimes really mattered, most are pretty self expiatory
- The usual B/P/S
- Various elements
- the usual B/P/S but from weapons made from a specific material that targets certain creature defenses or has an alignment/particular +value needed by a creature defense.
- Alignment based
- Precision (sneak attack & maybe a couple others dealt this type of damage)
- untyped
- others?
All of that is no longer true in 5e so...
- Sneak attack has such low bar that it's almost guaranteed now so there is no reason to have magic items that lower the bar there.
- There can't be magic items that expand what the user can damage like was possible with precision dice because the only exceptions are probably just highly specific monsters (none I can think of) that are somehow melee immune or whatever.
- Damage types have had their value as a meaningful distinction muddled & watered down to the point of making it a pointless distinction for +sneak dice over +element dice or whatever
After all of that it looks very much like the only benefit of items that add sneak dice specifically seems to be that they would stack with elemental weapons & guarantee the party rogue is always the most deserving PC for such an item no matter what . That's probably not a good or even reasonable need to justify such a magic item... Can you give a good reason why such an item is needed mechanically or should even exist?