Mecha’Thun Combo/Control Warlock

2xGalvanizer on Mecha'thun , on the next turn, if your deck is empty, Mecha'thun + Bloodbloom + Cataclysm = OPPONENTS DEATH!!! But be careful that there is no Voidlord of yours is still alive, because than it won’t work because of the Voidwalker s that spawned of the Deathrattle.

Alternativly if u already used your Bloodbloom and/or your Cataclysm , you then need to empty your hand and deck, have your Mecha'thun discounted by 1 or 2 mana, but you still need to have 1Dark Pact, but only 1 (because otherwise Mecha'thun won’t work), and then your opponent is also dead. These two combos is only required in slower matchups, because aginst aggro you have your standard Control Warlock boardclears, removal options and taunts.

The Ectomancy is in there just because I want to try this card out, like doubling your Voidlords sounds kinda nice. Could be replaced with anything else, but Rin, the First Disciple is kinda pointless in this deck, because of your Mecha'thun combos in the slower matchups. Another Siphon Soul or just a Voodoo Doll would be solid inclusions.

If there is going to be a lot of Magnetic shenanigans than 1 or 2 Spellbreakers would be solid tech options, like only 1 seems to be ordinary. If you’re struggling against weapon decks 1 ooze or Harrison Jones are enough. I would replace Mortal Coil or Bloodmage Thalnos with these tech options.

I could also see this deck in an Even Warlock shell, if you’re feeling like doing so you only need to replace the odd cost cards, the Possessed Lackeys and probably also the Ectomancy with Genn Greymane and 10/11 (if you replace Ectomancy) other even cost cards, e.g. like Dread Infernals, Hooked Reavers, Vulgar Homunculus‘, Sunfury Protectors, Spellbreakers, Twilight Drakes, The Lich King, Mountain Giants or other even replacements listed above. The choice is on you.