I'm really trying to help my friend learn how to balance homebrew magic items and he seems to think that there's absolutely nothing wrong with this. I am doing this to our party's own detriment since we're almost all veteran players and I want to help him grow as a DM. This is the description of the magic item:
Uncommon, requires attunement
While you are attuned to this item, you have a +2 bonus to all dexterity based checks (including initiative and skills.)
He sold it to one of our players at a shop for 500gp after granting us something like 2000gp to start the campaign. 8th level characters, the player using it is wearing plate armor.
My take is that it's at LEAST rare, if not up to legendary. The only reason I'd give it rare is that it's attunement, but otherwise it's almost 2 manuals of quickness of action, without saves, AC(which wouldn't matter anyway since he's wearing plate), and damage/attack rolls using dex (also not used, strength based fighter).
Am I crazy or is this BUSTED for an uncommon magic item?