Ah I figured it out! I believe invigorate is meant to recover MP (the syringe is blue, the others are all red). The code had attribute: 0, it should have been attribute: 1.

I hope you continue to update this mod :) I would love to see what your idea was for Gore/Goren

I love the idea of this mod! It's super fun to get a free heal in and then drain the enemy to get HP back.
I found some errors, so I tweaked the code a bit for my own playthrough:

- Gore and Goren have the axact same effect (they both have a base power of 70 & 200 scale for mind, neither of them are multi-hits or target all enemies in your code, so Goren is just a more expensive version of the same skill as it is now).
I made gore even weaker, so you drain just enough to get one free quick heal. I did make it pierce 50% of magic armor, otherwise it falls of in endgame.

- I don't know what invigorate is supposed to do? Is it supposed to heal MP? Because it just heals 10HP, but costs 25% HP.

Other than that, super fun mod (and really cool class sprites)