Hey! There are many reasons, build and equipment dependent.
I will try to explain the main ones.
1) Confront any foe. I think it’s a must have for any THF toon. To be honest, without caf THF actually sucks: glancing blows damage is almost irrelevant, cleaves don’t doublestrike etc etc.
So you need to invest heavily on Charisma, to get at least 40+ attempts per rest. INT and CHA have no synergies.
2) Even maxing INT, DC casting will be useless (in high skulls content). To be able to land your spells, you will need a dedicated equip (spell focus, insightful spell focus, quality spell focus, profane, filigree bonuses etc) and dedicated choices (feats, destiny, twists etc). That will destroy your melee damage.
3) There are only 2 artifacts with quality accuracy and quality deadly at the present time (STR and WIS). Divine Might makes your gear tetris more easy.
I made the simplest choices: CHA for Confront any foe, Cleric for Turn Undead and Divine Might, Brand of Kalok Shash as artifact.
Sometimes the right choice is the easy choice
True. I can rely on +8 tomes and +6 INT from completionist and racial completionist so I just dumped that stat. Please note that I cannot self heal on this build, excluding raids.
In r10 quests, I would need at least 40 Reconstruct spells to fill my hp bar…
That's actually the main reason why this build is not for soloing. I was able to complete the most difficult quests (like toee pt2, slavers pt 3, soul survivor etc) in tandem with a friend, but I can’t close a r10 quest without support.
Great, I’m happy to hear that! I really like DDO because it offers almost endless possibilities for custom builds and playstyle