Hearthpwn

So this has been a pet project of mine since Boomsday Project, and it only just now started to even approach tier 3, largely thanks to SN1P-SN4P. That's right, tier 3. This deck won't carry you to legend, it won't give you any easy wins (except maybe token druid). But it's a ton of fun and uses a lot of cards almost never seen in constructed play.

The Shell

So the base shell of the deck is very similar to zoolock, early game minions, token generators, go wide and buff your board. However this deck accomplishes that in some unusual ways.

For example, you can buff your board with Grim Rally, or you can buff a minion with Replicating Menace, which in turn will fill your board again, then buff the mechs again with SN1P-SN4P, Zilliax or even Skaterbot. (It might seem weak but an opening of Mecharoo into Skaterboi will flat out win games against mages). You can also generate value and board presence with lackeys back sacing minions to EVIL Genius.

But no one cares about all that garbage, that's (slightly less standard) zoolock.

The Unusual Cards 

Glinda Crowskin - Meme Queen supreme, Glinda has been at best mediocre since her release, however, pair her with a couple of lackeys, a Skaterbot or even a Mecharoo and you can generate a lot of late-game value, even the turn you play her. I don't think I've ever lost a game where she got to stick around for a turn. However, she doesn't REALLY shine until paired with the next card.

Summoning Portal - Trash tier since classic, it's been toyed with a few times but never stuck around. Previously the best combo was with Glinda and Gnomeferatu, which sadly has rotated, and even at the time was a rather weak, fringe deck. However, we still get Phantom Militia, which can be a game winning combo against aggro, and when paired with Glinda the card still has insane potential. However, Glinda already costs 6, and pairing the portal with any minion without echo usually isn't worth spending 2 mana for a 0/4, and Unfortunately the militia was the only card with echo worth running, making the card horrendously inconsistent. Until now.

Thanks to SN1P-SN4P, we finally have enough synergy that this card isn't dead half the time, and portal into sn1ps is a really solid play. The important thing to remember is that the portal is best viewed as a turn 6+ card, played alongside a 3-4 mana card, preferably one with echo, making it hard to remove both the portal AND the minion, forcing your opponent to make a choice and (hopefully) lose board control. Never keep it in your opening hand no matter what.

Plot Twist - In here as a 1-of for two reasons. Firstly, the deck CAN be clunky at times, and a re-mulligan can help a lot if you strike out early on. But mostly it's here to combo with the next card.

Dollmaster Dorian - Zoolock already ran The Soularium, so add one Plot Twist, and considering Warlock can already draw a card for 2 mana, Dorian becomes a solid token generator, and another card that if not removed, can run away with a game. Additionally, since most of our minions are mechs which we can buff with magnetize, have deathrattles or have taunt, there are only 3 minions you can hit that are arguably "dead," and even then they're fodder for EVIL Genius and Grim Rally.

Soulwarden - This deck has a lot of value/token generating cards, and a few combo pieces, that normally if discarded with Soulfire or The Soularium would feel really bad, but the warden allows to not only get those cards back, but over the course of a game, do it twice, and if we happen to discard one of our wardens, the value never ends.