When using the xbox controller and talking to a merchant, if you put items under "vendor's offer" in the barter tab, and then switch to the donate tab and donate (seemingly almost any item) the vendor will give you everything in the barter window regardless of price. Even if you put all the vendor's gold as their offer, they will still give it to you.
I've replicated it on many different merchants at fort joy using characters (custom elf and lizard) who have lucky charm and sometimes persuasion or bartering as skills.
I've had issues replicating it on the same merchant more than 2 or 3 times. It seems like an unintended bug rather than a feature. I would prefer if donating things could get you SOME stuff you're interested in more than a (ever so slight) discount (considering the very limited gold in that section of the game) but this seems broken.
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Also skills for the metamorph are very annoying to use in combat considering you get a new temporary skill every time you transform into a new form. (bull horns/medusa head/ wings)
That new skill goes into the first empty space in your hotbar it can find, instead of replacing the icon for the transformation skill itself. Makes it really hard to find the new skill every time its on different pages of the hotbar due to having other skills and items. Since the skill after the transformation is only temporary you cannot permanently set it to any space in your hotbar. The "You learned a new skill" popup should also be disabled for skills like that which are used multiple times per battle.
