Running a varient of this with...

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...+2 earthen ring, -1 illuminator, -1 ice block, +1 blizzard, -1 poly...I first saw it on a guy's stream named ItsOtter about 1.5 weeks ago, so not sure who came up with it first, though he also played without illum/ice block (I could see that being a really nice combo, might give it a whirl. though I don't think not having an ice block really prohibits the deck from succeeding, but it might be nice for the constant illum heals, especially if your opponent chooses to duplicate them).  I like the ERFs for healing deathlords against mid-range decks which is where this deck can struggle a bit.  Hard to keep a smart druid (read: one that doesn't duplicate your healers) from nipping away at you for a quick combo.  Midrange druid has definitely been the worst matchup for me.  Too many 5 health minions for flamestrike, too many charge minions to bring you low for double innervate combo  I could see illum/iceblock really helping with that.  This deck eats control alive unless they get, like, literally a KT down and you have no answer for it.  I've lost to a couple handlocks, but probably been about 50/50, but don't think I've lost to control priest, pali, or warrior.  It is very good matchup against agro as well.  Deathlords plus duplicate just ends them, particularly with the ERFs, which is always satisfying :)  It's a fun deck to play (if you have time--games tend to go 15 mins+).