[HexGirlBestGirl]

Underworld Flame is solely to stack on a DoT and is otherwise often underused or just entirely ignored. I've even seen people only get it at Level 1 recently solely for the burn and nothing else. And if you're not a Destiny Mage, you likely can't afford to put 5 points into it for the meager DoT. How would I change it? Just make the Burn LV higher or make it burst around the person it hits to inflict damage and burn LV/Duration for 25% of the level. Maybe Dark Cinders like Snake said.

Eternal Darkness? I have only ever made this work when using my Rotwood Eternal Servitude and even then it was mediocore. Especially since other options exist that give just about the same amount of value if not slightly more. Although considering the damage 'can' be good without giving up too much that's expected for a Hexer? Just making it able to blind normally and maybe lowering the FP Cost a slight bit seems fine.

Silent Spirit? I use this all the time and it makes me hate that Curses are either "You no basic hit me" or "You no basic doj me" or "haha +25 Crit Per Curse go brrrrrrrrr" since I see it as a perfectly fine skill. Stat reductions just kinda suck on them unless you stack far more stat reductions overall due to how diminishing returns work. I just see the literal only reason you have to use it within the constraints of your skill tree to be mediocore or not worth the 3m intentional investment to force an enemy to hit you.

So either make curses better, make Silent Spirit 1m with a 3 turn cooldown, Make Silent Spirit have 3 Range instead and make the opponent come to you then hit you, or make it 1m with 3*Rank Danage Reduction. Hell, i'll take it as an even inferior Spirit Pain without needing to invoc for it.

Make it have a 5 Turn CD but inflict a status effect for 3 rounds that's basically a LV*5% Chance to just stop a basic towards you and heal you for 25 HP.

Essence taking? That relic from SL1. Good ol' days. Only way to make it remotely worth it is to either change it entirely, make it give FP on enemy killed akin to the Levi Amulet, or just remove food from the game. Realistically speaking, when a player gets used to grinding then more often than not, they won't have much issues with running out of FP or can get by just fine and have food give them all the rest. I wouldn't even consider investing 1 point into it as is nor with what I suggested above due to how it doesn't feel remotely like a bonus or beneficial compared to other things I can get when food exists.