Turn 1: Panic Spellbomb (or some other 1-cost artifact)
Turn 2: Mana Myr.
Turn 3: Ezuri’s Brigade.
Turn 4: Grafted Exoskeleton
Turn 5: Equip Exoskeleton. Assault Strobe. Blow the Spellbomb; for the hell of it, draw a card.* Attack. Win.
Yes, there are lots of things that can go wrong. Yes, you could probably speed this up with a really lucky draw in a specially-tuned deck (in which even more things could go wrong). But this is totally doable, and the idea of giving someone 20 poison counters on turn five makes me giggle like a little kid.
I am also already making terrible plans involving Mimic Vat and Putrefax. This set is utterly ridiculous.
* Hurr durr durr. See if you can spot the problem with this part of the plan. (On the other hand, if you cast another Spellbomb with your extra mana on turn 5, this works just fine.)