Ok, I didn't fully read the triggers, but some obvious stuff:
You know how you damage 4 units with extra damage, and one with more extra, well, what if the random unit to do 100 damage is the same as that that already got 75? So unless it's intentional, you need yo use a Debug group (you know how to do it, add the 4 units damaged to that group, and then pick a random one which isn't in it).
Also, your preload leaks, and you're using one preload for two spell, separate one for each. And create the dummies as neutral in the preload, and also preload special effects.
As for my opinion on my spells, I don't see anything special in them... but I must say, good job!