Which metagame Warrior deck is the one...
Auctioneer is just really solid draw for spell heavy decks, and warrior control is a little weak but supplemented by the hero ability to make it pretty survivable. Those control cards are cheap though, so that's a lot of potential draw. And Battle Rage is pretty hit or miss so... yeah. A lot of warriors run either Acolytes (fit better in aggro decks due to whirlwind, taskmaster, inner rage synergy) or Auctioneers (spell heavy, decks that don't run the previously mentioned cards).
It's more an issue of the undependable class draw than any particular deck. If warrior had dependable draw like lock or druid, I doubt you'd be seeing Auctioneers.
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