Galakrond Warlock had a strong run in Descent of Dragons and it continued in early Ashes of Outland because the deck happened to naturally run the best card against Demon Hunters, Sacrificial Pact.
However, after Sacrificial Pact was nerfed to only target friendly Demons, so you can no longer eat the Demon Hunter’s Demons for free and heal while doing so, the matchup flipped and became favored for Demon Hunters. This pretty much destroyed Galakrond Warlock as a top tier deck.
I spent several days working on a post-nerfs version of Galakrond Warlock and was eventually able to partially resurrect the archetype. Yes, it remains playable with minor changes, even though it took a huge hit.
Galakrond Warlock decklist
Deck code: AAECAf0GBsUEzAj8owORsQPjtAPxvwMMowHECJ2pA+WsA+isA+qsA+usA+ysA/6uA6qvA9a+A+m+AwA=
I tried a lot of things to recover some strength to the Demon Hunter matchup after the nerfs. Acidic Swamp Ooze proved to be ineffective because Demon Hunters swing those Warglaives so wildly that there is not much left of them to destroy after the first turn. Overconfident Orc could not stop the scourge either. I had some success with Khartut Defender, but ultimately it was too expensive and clogged my hand and did not allow me to cycle through my deck fast enough. I had somewhat more success against Demon Hunters by cutting Zephrys and Dragonqueen Alexstrasza, but then I started to else in other matchups because I did not have enough threats left in the deck.
Eventually, I ended up with two copies of Mo’arg Artificer and Frozen Shadoweaver. Mo’arg can amplify your healing from Nether Breath: when you cannot stop the damage anyway, at least you can heal back up. Frozen Shadoweaver buys you an extra turn that Taunt minions are unable to do against Demon Hunter by stopping all of Demon Hunter’s attack-based synergies for a turn. Both cards are among the weakest in the deck, but they are the most effective anti-Demon Hunter tech that you can include right now, so they are, unfortunately, necessary.
Against Demon Hunters, you try to keep your head above the water and eventually swing the game in your favor with Galakrond or Dragonqueen Alexstrasza, or even a regular Alexstrasza healing your own face and adding a big minion on the board.
In slower matchups, your gameplan is completely different.
Often, the key cards are Galakrond, Alexstrasza, and Nether Breath. The slower the matchup, the more you want to save Nether Breaths for face damage. When you drop the Alex and swing with your Galakrond weapon or hit with minions on the board, you’re almost there. Alex can be followed up with Kronx and two Nether Breaths from hand for 13 damage. Sometimes you can include Zephrys in the mix or alone for Inner Demon or Fireball or the like.
Sure, there are variations where you win with a big board or with Dragonqueen Alexstrasza, but do not underestimate the amount of burst damage Galakrond Warlock is capable of.
Galakrond Warlock mulligan
You always keep Dragonblight Cultist, it is such a versatile card for every matchup.
Other than that, if you’re looking to defend, you look for Dark Skies and possibly Frozen Shadoweaver or Devoted Maniac.
If you’re looking to be aggressive, keep Galakrond.
Galakrond Warlock gameplay video
Finally, here is a recap of the guide on video alongside several games worth of gameplay with the deck. I hope it illustrates how to pilot this archetype in the post-nerfs Ashes of Outland meta.