It is one of those spells that I have not been able to cast on any one except my magic people on themselves.
That doesn't work! Yet time and time again people recommend using it on the twins. HOW?
How to us use the spell "Anitmagic Field" on the twins
You can't cast antimagic spell on the twins. The spell as you said, only works on your caster. What the posts are refering to is the use of a scroll. During the course of the game you have an opportunity to buy, or find, a scroll of protection from magic. This works as an antimagic shell. If you place the scroll in your inventory and then cast it at a twin, they will not be able to cast magic.
Hope that clears it up
Hope that clears it up