I think I only used one heal spell in the dungeon without items, lol. Was at lvl 120. I killed everything super quickly with the Ragnarok sword (from the Booster Pack+ for Season Pass owners).Thanks, yeah that's a good idea, but won't you need like a 1000 spells? :lol I feel like I'm dropping in health super rapidly regardless of who I fight, even though I'm at lvl 104. Almost every battle is a battle of attrition in regards to potions and elixirs, especially in those special caves (Costlemark is the only one left). AFAIK, the healing skills should work from what I've read before. I'll check it out tomorrow maybe. I assume that if you die completely, you get a free pass out of the dungeon even if you've saved at a camp? The other ones were too easy so I never found out :lol
I think you should be able to leave it like any dungeon through the "Return to entrance" in the Map menu (R3).