The D&D/d20 Spell Conversion Thread

[Emerald Cat]

Originally Posted by Bruno

For double the cost, the missiles gain an armor divisor of 1/2.

I think they should be getting an AD of 2 instead of 1/2. A foe's DR is reduced to DR/AD if an attack has an AD. An attack with an AD of 1/2 would face DR/(1/2) = 2*DR, or twice the DR. In fact, ADs of 1/2 are a limitation you can take on an attack.