I like to take a little time to experiment with some stuff each week to see if it would work or be useful for the game.
I found a really nice material for a frozen effect, and so I did some experiments with freezing enemies in place.
It ended up being kinda complex, as in order to freeze them in whatever pose they were in, I need to make a duplicate of the mesh(or meshes), manually copy the position of each joint, and then reassign the Ice material to each material slot of the duplicate.
After all that's done, I need to delete or completely hide the original, and I think deleting it is the better option. Hiding the original means I need to stop all its AI, turn off all its collision, stop its movement, and make it invisible.
If I want to unfreeze an enemy, I can always save the value of its life, and any weapons, then instantiate a new monster with those values.
I also messed around with destructable meshes, and there are some neat things you can do with those as well.
So maybe an ice freeze spell in the future!