RBG

I was wondering if some f2p spells are better against some armour? like i know metal armour is worst for magic defence, but would an earth attack be better against a certain type of armour then a water attack?

What is the best duel arena world f2p?

Is there any item that alcs for like 500gp+ whatever its store price is? because im trying to get my mage up and make money doing it.