Oni-Cult Reactor (Standard)

Win Conditions:

1. Hitting lethal damage off of Dragonspark Reactor and harassing with Oni-Cult Reactor and creatures with haste.

2. Hitting lethal damage off of The Meathook Massacre after going crazy wide with tokens.

3. Go wide on tokens and then bury the opponent in 1/1 attackers.

Synergies:

Iron Apprentice: Making copies of Iron Apprentice with Kiki-Jiki and putting all the tokens on a Myriad Construct after paying its kicker can almost guarantee fatal damage from Dragonspark Reactor. Using these tokens to keep creatures alive during a Meathook has worked as well, especially for keeping the shaman from Fable of the Mirror Breaker alive.

Fable of the Mirror Breaker: Making a treasure token farm AND copying one of our other farms (Sokenzan Smelter/Iron Apprentice) gives tons of responses to everything, copying a Myriad Construct then targeting it with a Voltage Surge could create a massive amount of Construct Tokens as well.

Circuit Mender: Excellent sacrifice fuel and keeps us in the game longer with life gain. A few +1/+1 tokens from sacrificed Iron Apprentices can put a super strong blocker on the board until you get a Meathook Massacre or lethal damage from a Dragonspark Reactor.

Reinforced Ronin: Leaves the battlefield every turn proccing Oni-Cult Anvil even if you don't have any sacrifice fuel. Enables way more Dragonspark Reactor procs if it can stay alive. This card very much enables this build, should mulligan if you don't have it in a starting hand. Wipe proof, you can wait to use your Meathook once he's out of play.

Sokenzan Smelter: You can convert all created construct tokens into 3/1 tokens with haste, then buff them with Iron Apprentices don't come out. If you get more than one Oni-Cult Anvil out, you can create a devastating board state with waves of tokens hitting for pretty good damage.

Myriad Construct: Targeting Myriad Construct with a Voltage Surge could win the game, but since it's a 4/4 or 6/6 it could draw opponents to target it and waste their removal. Paying the kicker would yield 6 constructs when targeted, and you can sacrifice it after it's targeted for an Oni-Cult Anvil proc since you're going to lose it anyway. Sacrificing a Iron Apprentice or two can get you even more constructs, and if you could get it to 10/10 you'd probably have fatal damage on the board from a direct attack or a Dragonspark Reactor proc. If you have a Dragonspark Reactor out this could be the end of any big threats on the board and your opponent.

Deadly Dispute: Sacrifice some copies or tokens in order to proc a Dragonspark Reactor blast. A 4 mana activation cost is pretty steep but with one or two treasure tokens it's more realistic to activate in a pinch, or to pay the kicker on Myriad Construct.

Voltage Surge: Mainly in the deck to target Myriad Construct, but good removal and sacrifice fuel for Oni-Cult Anvil.

The Meathook Massacre: I get it, I get it. This card is stupid expensive yes but two copies of this have not let me down yet. A good board wipe can turn everything in your favor, definitely enables this deck to keep up at mid/long range if your draws are bad.

Experimental Synthesizer: This is mainly here for deck thinning and free land plays, but the activated ability to create 2 blockers with vigilance is pretty good too. Serves mainly as sacrifice and Oni-Cult fuel but it definitely enables this deck.

Hostile Hostel: This would be a hail Mary, if you are just getting the worst luck possible this thing can come in handy. A 3/7 blocker that causes a burn cascade is pretty impressive, and since lots of the cards in this deck have uncolored mana it actually makes sense to run 4 of them.

Bloodfell Caves: The single life points are definitely key to staying in the game, as long as you can get to 24 life or so most burn decks will run out of steam before you do.

Sideboard:

I didn't include a side board but a weakness with this deck would definitely be a heavy amount of artifact removal, which standard is packed with at the moment. We have tons of engines in this deck for token creation, but a single Abrade or Farewell could take the deck into turn 20.