My nick name is phobia. I love Warlock and experiments with new combo decks and cards.
After success with my homebrew Mecha'thun N'Zoth Event deck (It had highest winrate for Warlock on hsreplay - 58%) I tried to find something powerful for new warlock combo. Kanrethad Ebonlocke + Sathrovarr (10 mana one turn super combo)? Too slow, I thought. And not enough against Control Priest sometimes. Then I removed dragon pack and added board destruction cards with Expired Merchant for copy Sathrovarr. You will have 7 Primes, each summons 3 huge demons! It still good against aggro decks (many removals and heal)
Now I can say this is not fun deck, It competitive in ladder. When I started to record videos I was on D5 rank, now I am on D3 rank and continue to climb.
Tips and tricks
Always keep quest
Against Aggro - all your low cost removal cards
Against Control - Plot Twist, Questing Explorer
Egg / Enrage Warrior - I never lost in this matchup. Warrior will stuck armor and try to create board, clear this every turn and make quest to EZ win. Don't forget about big charge damage so keep your health 20+.
Galakrond Warlock - just keep in mind 4 strong turns: Alexstrasza, Galakrond 4 demons, Zephrys, and Dragonqueen. Keep your removals and you will win.
Galakrond Priest - this guy will steal all your cards: Primes, Twisting Nether etc, so you need to discard Sathrovarr and kill Expired Merchant in the same turn! Then copy Kanrethad Ebonlocke. Don't play all your cards in one turn, remember about Soul Mirror and Plague of Death. Winrate 70-80%.
Mages and Rogues - always casino! So 50/50, keep heal for Alexstrasza turn
Hunters / Demon hunters - bad matchup, you need good start and luck to deal with It. 30% winrate.
Some gameplay examples:
Tempo Demon Hunter
Gala Priest (I failed to copy Primes twice, but won)