Lockmage; have one main warlock, and then have an alternative mage character on a second account to supplement your warlock with food, portals, Gold Farming, and other magely things. Also, you just need to whisper one person and have an "alt" online, to help you summon your other alts, if you need to do so.
In short, own multiple accounts. The irony of it all, I would've bought 2-3 subscriptions to play on Blizzard legacy realms, with the crazy altoholic methods I have.

Oh, well. ON TO THE BREACH OF NOSTALRIUS ONCE MORE, COMRADES!