Originally Posted by
Venar
Why scrolls were remove from vendors...
There is a difference between this spell and regular summons.
Summons
Summons are creature that you've summoned to our plane to fight for you. They will stay loyal unless dispelled, and they will leave the plane after a certain time.
Create undead
When you create undeads, you actually create them: they are not brought in from another plane, they are created and there to stay. Until they die. But, they don't remain loyal for long.
The thing is, with creative play, you can actally charm these undead after they broke, using charm undead OR control undead. Since, unlike summoned pets, they don't leave for some other plane, you could accumulate these pets.
Summon 4 ghast. Charm them as they break. Create 4 more. Charm them... etc etc etc.
A single guy could build an army.
Unlike regular charms, where it is impossible to have 2 at any time.