Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - General Source king chest

Hello, I just defeated Rex and he only dropped 1 chest couldn't manage to open the Source king chest.

I tried lockpicking but nothing happened.
I already used my unlock scroll.

So I'm just wondering where can I find another unlock scroll or spellbook or if there is a key for the chest.

thank you

where did you find your first unlock spell? I've still yet to find one

I think I found either in beginning dungeon or one of the orcs in beginning it certainly was really early found.

Same thing. Already used mine and haven't found another. Hoping there is another way to open that because that fight took a bit of strategy on my part. (Fun fight )