In the past week multiple players got Top 25 Legend and even #2 and #1 with SN1P-SN4P Warlock and while I am personally just around Rank 5 to play my meme decks, this went 6-0 when testing. It seems like the best warlock deck and maybe even the best deck in general at the moment. Let me explain. When you face anyone who plays aggressive a giant Zilliax or just a huge wall of taunt with Bronze Gatekeeper usually does the job, even against Mages!
If you face a control or Reno Deck than you go for your one of your other win conditions. Either have a mech stick on the field for a turn to then go in with Summoning Portal into Mechwarper into SN1P-SN4P to deal 30+ damage (Note: The order matters! If you play Mechwarper before Summoning Portal the SN1P-SN4P will cost 1 Mana instead of 0 Mana). Or, in case Ice Block ruins your day or a Reno Jackson from the enemies site you can OTK them with 1 Galvanizer reducing your Mecha'thun to 9 mana and making it possible to kill him with Plague of Flames
Glinda Crowskin could count as another win condition giving this deck 4+ ways of winning. If she sticks or comes down after Summoning Portal and Mechwarper you can also go infinite with your Mechs and ignore your missing SN1P-SN4P to win with a Skaterbot for example. Personally I might want to include a Coppertail Imposter but that might be too slow
If you have any questions let me know in the comments down below or on Stream!