Which school of magic do you prefer and why?

:) Even if the clone has 1000 snipers, they'll only have 1 HP :) Even a single peasant (well, I might be exaggerating a bit, but...) can take down this legion :)

One peasant can defeat them if he stands next to them, but who will let him get close?
The clone has a very remarkable property! The clone always moves after the original (unless he's blind or paralyzed), regardless of speed! That is, if we have 1000 snipers, during THEIR TURN, we create a clone of them, and it will immediately start moving, and the opponent will not be able to prevent this!!!! Well, then let them kill it, because clones rarely survive more than one round (of course, if the battle isn't against neutral creatures...).

Added after 14 hours 2 minutes

The clone doesn't move immediately after its original. With equal speeds, units take turns, including the clone!

I was a bit off... Indeed, if the opponent's army has monsters with the same speed, then the turn will be taken in order... BUT!
For your own army, everything is true. If the clone has a speed of 9, and the original has a speed of 4, then the clone will still move after the original! If the original is blind, then the clone will move immediately after the original "should have moved"!