How does a warlock get to summon a succubus?

I constantly search around my point's looking for Herb's to Mill and make scroll's. I cn almost never find one's that i need, I'm a Blood elf Lock lvl 13. My Herbalism is 102, My Inscription is 110. If you have any suggestion's please Email me at Kamikazi97470@yahoo.com.

What is generally the best type of tailoring to pick for a warlock? As in, what would be most beneficial for me? I'm unsure what to pick out of spellfire/mooncloth/shadoweave. Any ideas?

i'm confused abouit how to use soulstones