okay, everythings cleared, dude's in the library. i can't get in the room on the bottom right hand corner below and right of blade room. i hope the last pool is in there. it says it's warded. how do i get in? i've been everyhere. please helppppppppppp!

You're suppose to talk with Nheero about Thoraskuss, then deal with him, and you'll be able to get into that room via a staircase in Thoraskuss' chamber.

i'm looking for the 4th pool. i can't get into a warded room in the BOTTOM SOUTHEAST CORNER!. i've already talked to nheero in the library about thoraskus. how can i deal with him if i can't find the 4th pool? is the last pool in that room, and how do i get in? thanks.

Drink the fake Histachi potion and go in to the room of Sseth. There is a switch there, which repairs the bridge, which leads to Thoraskuss room.