Death is OP!
They can do damage over time with poison.
Plague is like weakness to all enemies.
They can easily get better damage than storm for greater accuracy.
They can heal others and themselves with sacrifice.
They are the only school that knows health drains.
They have more minions than Myth, the school that was dedicated to minions.
Also, they know every type of spell there is (except enchantment, and who cares about those?)
Death should be tweaked down a bit!
Off topic: Pople, please don't quote long posts. It makes everything hard to read. Just say "@" and the person's name.