Man I am 7-0 with a Warlock right now that has a Kezan Mystic and I've been holding it in my hand all game hoping to use one on one of the many Mages I've played, but not a single one has dropped a secret yet
I love being able to Lifetap without a thought because you have 2 Antique Healbots in your deck. Good stuff. Warlocks with 2 Healbots and a Kezan Mystic or two in their Arena deck sure are unstoppable. An Ooze helps too. You have amazing tools for your weak matchups, and the rest you roll over.
Just had a hilarious game where because I had a Venture Co Mercenary out and only 3 cards in my hand, my Paladin opponent felt comfortable dropping a Fel Reaver. So next turn I Mortal Coil his Silver Hand Recruit, draw into a another creature. I crash my Venture Co into his Fel Reaver and drop a Bloodsail Raider and a Flame Imp and Soulfire his face as my last card and then lifetap into another Mortal Coil and finish off the Fel Reaver. Goodbye 18 cards of your deck.
I didn't think it'd get this far with no late game, but fuck me it is so good in the current Arena meta, even if it's slower these days. For whatever reason, it's rocking faces. I guess it's all the utility. 2 Mortal Coils, 2 Soulfires, 2 Shadow Bolts, 1 Ironbeak Owl, 1 Explosive Sheep, 1 Kezan Mystic and two Fel Cannons. I have come close to fatigue twice though, because I just lifetap nonstop
My seemingly unstoppable Warlock Arena: