One E:
_ _
_ _ E
Used: E
How about an O?
What about T?
One T - probably where you’re expecting, and a few O’s:
_ O _ _
O _
T _ E
_ _ O _ _
Used: E, T, O
I’m guessing that there are a couple of Ss in there somewhere. 
You’re guessing exactly right, there are a couple of S’s - probably enough to give a clue:
_ O _ _
O _
T _ E
S _ O _ S
Used: E, T, O, S
Lord of the Snows?
That’s the one! Your turn, Zax!
All right! New puzzle:
_ _
OK, let’s start with E.
A ‘T’?
Yes, two of each.
T _ E
_ _ _ _ E
_ _
_ _ _ T _ _ _
Letters used: E, T
OK, let’s try for O’s.
I guess there’s an H there, and maybe more…
Yes, yes!
T H E
_ _ _ _ E
O _
_ _ _ T H _ _
Letters used: E, T, O, H
There’s got to be at least one F.
Any R?
One of each!
T H E
_ _ R _ E
O F
_ _ _ T H _ _
Letters used: E, T, O, H, F, R
The Curse Of Balthaz?
Indeed! You’re up, Liam.