Feedback on custom magic item

[Skrum]

I love the idea and will have to come back to comment later. In the meantime, as a curiosity, do you want the Longsword to enable a Rogue's Sneak Attack if they're in Dexterity Mode (or maybe in other cases too)? As written, it's like a Monk Weapon: you can use Dexterity, but it doesn't gain the necessary properties to use Sneak Attack.

Yup I definitely want it to have the finesse property. This exactly why I'm getting this reviewed lol