Hearthpwn

Reddit showcased a possible Turn 1 lethal, so I decided to make my own list to try and hit this achievement.

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The idea of this deck is to mulligan going second (on the coin) for 5 cards. We need to mulligan for 4 of these 5 cards, then hit the last card on our first draw.

MULLIGAN FOR
Foxy Fraud, Shadowstep, Preparation, Scabbs Cutterbutter, Myra's Unstable Element.

Then, once you finally assemble all these cards one your first time, you can play Foxy Fraud into Shadowstep the Foxy, play it again, play Preparation, into 0 mana Scabbs, which will make your Myra's 0 mana. Now you get to draw 10 cards, where EVEN MORE RNG needs to happen!!!

Because of the Scabbs effect, you still can play your Efficient Octo-bot and discount it with a Backstab. You can use your second Shadowstep to return the Octobot, hit it again with an Ethereal Augmerchant, discounting your hand AND giving spell damage. Now you're whole hand should cost 0, and if you were lucky enough to hit BOTH Garrotes, you'll deal 6 damage, putting 18 damage in bleed cards in your deck. Play Shiv (or Yoink! into a Warlock HP) to draw the damage, hopefully killing your opponent if you have enough spell damage on the field. If you don't you have cards like Sinister Strike to close the gap.

Needless to say, this combo is VERY unlikely to happen, but as a content creator, I wanted to showcase this interaction for you. I haven't been able to complete the FTK yet, but I was able to complete this combo on Turn 2. The clip where we popped off the Turn 2 combo as well as a deeper explanation on the combo is featured in the video below!