#No, this is not balanced (probably) Honestly?It's hard to tell for sure without having access to the full class.
But, based off what you've provided, I don't likethink it is a balanced option compared to the base Monk.
Let's look at the base Monk's natural qualities:
- Generally doesn't need gear (armor/weapons), so is always ready to fight.
- quarterstaves are free
- high mobility
- moderate damage that is scaled to the tiers of the game
- mild CC options (stunning fist, way of the open hand subclass, etc)
I don't understand the mechanical "point" of the armor. In terms of raw combat efficiencyBased on just AC values, you're slightly benefiting low-wisdom monks and hurting high-wisdomthe armor only benefits monks that have a Wisdom of 15 or less. And then add inThen it actively hinders Monks with 20 Wisdom, so that the "penalty"max armor is only 19. Then you give this monk a penalty of requiring this armor to be remotely effective, taking away another of the monk being ablebase monk's strengths of not needing a bunch of gear to be "caught" without his armorgood (no punching powers and have his AC suck. (compared to the usual benefit of the Monk always being ready to go fight stuffdrops by 2-4).
Losing out on martial weapons is a big lossmeans no reliable way to early levels and thendeal specific damage types; no slashing, no piercing, no ranged weapons, etc. Adding the adding proficiency bonus to damage is a huge gainlooks like you're just evening out the damage potential at later levelslevel 1, but you're actually skewing the Monk's damage output for the rest of the game (as KM's math shows clearly). HoweverAdditionally, the fact that you only get the bonus when you're wearing your special MacGuffin armor is both mechanically and thematically confusing.
Finally, the bonus ki points. At early levels, you're giving a big bump to the ki reserve for no "cost". At later levels, most monk's have more Ki than they know what to do with, so an extra 5 or 6 isn't going to help all that much, especially since their capstone ability at level 20 gives them ki when theirthey're out at the start of a battle. Honestly? This feature is probably fine, but the base monk works without it.
Why notIf it were me trying to do this, I would just flavor the wisdom bonus to AC as a "mystical soul armor"? The monk has aYour armor is different based on your Wisdom bonus of +5? Then that's some awesome reinforced chainmail, where the monk.
+1 Wis = Leather
+2 Wis = Studded Leather
+3 Wis = Chain Shirt
+4 Wis = Breast Plate
+5 Wis = HalfPlate / Chainmail
(and you still gets theirget your dex bonus!)