I got it to work! Thank you for trying to figure it out for me, haha. Here is my feedback:
Your music has such a good evil and foreboding feel. I love the use of the drums and the choir vocals in the background! The layering is very good, I would just recommend doing the layer transitions a little sooner and waiting in each section for a shorter amount of time. For instance, I began to get a little lost in the drums in the beginning / it got a little stagnant. Introducing the later layers earlier would be great, and then we can get to that fantastic chime-like section sooner.
Now for the SFX. Necromancer's den was delightfully haunting. I worry however that this is more so environmental ambience than SFX, since it is not an effect that occurs with an action by the player or AI? I do not know a ton about the terminology however, so I may be wrong. The spellcasting was really cool too, but sounded a bit like a laser blast. I love the wall crumbling SFX and can picture castle fortifications falling in battle. I would recommend perhaps shortening it or cutting out the lower reverberating layers (it sounds a bit like thunder, which can be really cool if that is what you are going for).
Great work on this!