@Mortanius - Rare jewels can spawn up to 15% minion damage. Rare rings can spawn up tp 15% and amulets 40%. Tainted shrine crafts are also good for minion damage, just remember to bless them. Honorifics get double mo bonus and can be blessed as well.
@Annoying cat - That was crafted to make a runeword. First roll the item to white by cubing it with a catalyst of destruction + rune. Then roll it superior by cubing with an oil of enhancement twice. Re-roll for the desired stats and then luck trial orb for 2% chance of double mo bonus. Keep rolling until you get the desired stats.