Yeah it essentially lets you do like 8 or 9 turns consecutively. There's a lever at the end that lets you use it in a new game.On a side, note, apparently, if you beat this dungeon, you actually get one more piece of content that wasn't mentioned in the guide. It's this boss rush type thing that gives you access to some ultimate spell that you'll never need. What does that ultimate spell do? Dunno for sure. Based on the description, once you cast it, you get 9 turns in one... so that's like wearing 4 upgraded Skanda rings... I didn't bother learning it to find out, the LP amount is absolutely insane. Even if I wanted too... what the heck would I even use it for?