Adding AP, Spell damage, and healing to items

So, I was wondering, how would I add +ap, +spell damage, and +healing to custom items? I know they're spells, but how would I find them and put them on items? Also, would it be possible to make custom spells with custom values for those stats? If so, how? Thanks in advance

you can add spells by getting the spell ID n having the activation on the spell 1. u can create your own spell but i'v never had to so i really cant explain how. but to get the spell ID i usually go to an item that already has it & grab the spell ID from that item n put it on mine =P