[Endoperez]

Mystics have elemental randoms, so Ring of Sorcery won't help. You need Ring of Wizardry, S5 and 80 pearls before forge bonus.

For Nature, make a Moonvine Bracelet. Nature and Astral, I'm not sure about the levels, but I think it's N3 S1 - Astrologer with his random in Nature and Thistle Mace can do that.