Here are the Mechathun decks I used for Lazul and Rafaam, in my recent ASM marathon run. https://imgur.com/a/X4uPpic Lazul: AAEBAcn1AgrtBeIGxAj1D9YRnccCzukC8fsC66wD8KwDCooB+wGcAom0Ao/HAvLQAsfTAv3hAp2pA4SxAwA= Rafaam: AAEBAcn1AgqQB8MW08UCnccCzukCwvECw/MC8fsC8KwDrroDCooB2wbiBvwPl8ECj8cC58sCx9MC2psDhLEDAA==

For Rafaam, I'm using Dorian combo since it's safer than Thaurissan + Enchanter, you don't need to spend a turn to setup the combo. Late game could be dangerous in this fight, and having to spend 9-mana on a turn to setup the combo can kill you.

I put more cheap spells than before to have more chance in having a cheap spell for the Kaelthas trigger. The Plot Twists can also be used to counter Chaos Gazer's effect once in a while.

For Lazul, I'm still using the Thaurissan+Enchanter combo since the fight's easy, and doing the 9-mana setup is rarely dangerous. I'm still not sure if this is faster than using Dorian. It has faster animation speed, but Dorian combo can be done in turn 9 if you're lucky. Having to do the Thaurissan setup also reduce the chance for you to get a kill within 10 turns.

Galakrond by AI suicide manip: https://imgur.com/a/9Upn7FB AAEBAa0GBMUEkNMC87sD9tYDDbe7AujQApeHA8vNA/vfA/jjA62KBMGfBPCfBIqjBPnbBIaDBYakBQA=

Galakrond have a 4-durability weapon that can't attack face. Current AI always use it on any minion instead, without caring about his health. Alexstrasza made it easy for the AI to kill himself.

Galakrond have 1x Time Rip spell, which he will use to destroy Alexstrasza before using his weapon. If this happens, the Scrapyard Colossus acts as a backup. It'll guarantee 28 damage to his face if his weapon still have 4 durability.

When playing Scrapyard Colossus, don't need to care if the opponent still have plenty of minions on the board, current AI will still kill himself before killing you with his board.

I made this deck to be an almost minionless deck, as I don't want to use any other minions that will cause Galakrond's weapon to lose durability. This also allows the use of Insights as a tutor for the late game finishers. Although don't keep Insight or any minons on opening hand, 4/5-mana board clears are the priority for mulligan.

All of my latest Heroic Galakrond (League of EVIL) decklists Decklist: https://imgur.com/a/tdeSdh7 Deckcodes: https://pastebin.com/igGcMcT1

Few things to note:

• I've tried aggro Token Druid for few other easier fights as well, but chose not to use it for the run. For Reno, his board clears still make the Token Druid inconsistent. For Talritha, Token Druid is still consistent, with a small chance of getting a turn-5 kill. But more chance of being slow as well with bad draws.

• For Wanderer, I'm using Mechathunlock instead of the Linecracker + BEES. Mechathun strats is now as quick as the old Linecracker strats. While the Linecracker strats seems to be less safe for the current AI, as they often use the Sharkbait spell to deal 7 damage to Linecracker in a single turn.

The fight is also still not 100% consistent (maybe around 80%-90% winrate). Sometimes his Sharkbait spell stops your Doomsayer or Depth Charge, and you don't have enough backup board clears or heals to survive.

Linecracker strats might still be good for the Slipstream fight on Explorers run, as they don't have the Sharkbait spell.

• I tried Mechathunlock for Dragonflights. It works consistently, but it's still slightly slower than Freeze Mage on average. Maybe could be faster than Mage one day, if the Mechathun combo got even faster.

• Amazing Reno still have some chance to lose (maybe 70% winrate?), but is much less horrible than the old times. (also faster with the newer Mechathun combo)

Rivendare OTK strats works well for a few bosses. I'll use it on Askaara / Amazing Reno / Wanderer. Decklists: https://imgur.com/a/nTBVyDi

Rivendare Spell-Hunter deck doesn't have as good defensive cards as Mechathunlock, so this deck isn't consistent for quite a lot of other bosses.

Askaara: AAEBAR8EnvwCj84D9tYDxaUFDa4GgAff0gKkiAOU/AOpnwSqnwTjnwTknwTlnwSZrQTB0wSNkgUA

This boss is one of the easier bosses on this adventure, which is why Spell Hunter works.

Amazing Reno: AAEBAR8EnvwCj84D9tYDxaUFDYAH39ICpIgDlPwDqZ8Eqp8E458E5J8E5Z8Eu6AEma0EwdMEjZIFAA==

This boss is one of the hardest heroic bosses ever. One of his main strengths is the crazy late game or bursts that could pop up after turn 7. Fortunately, the Rivendare Hunter OTK often already win on turn 7 or 8. The Hunter deck seems to have about the same (or maybe better) winrate than the Mechathunlock, while also being a bit faster.

Wanderer: AAEBAa0GBI2CA/bWA8isBMWlBQ3XCrcX0cEC0P4CmJsDmakD+98DrYoEiqMEorYEutwE6pQF4KQFAA==

Recent AI change seems to make the boss use the Sharkbait or Bomb Flinger card even more than before, which made it quite a lot harder for Mechathunlock to win. If I want to keep using Mechathunlock, I'll probably add Steamcleaners to clear the bomb, and Wax Elemental to protect my Doomsayer / Depth Charge from his Sharkbaits.

So, I tried an alternate strategy in Rivendare Priest instead. Probably a bit slower than Mechathunlock, but seems to be more consistent. Often get a turn 9 win. Still not fully consistent though, I probably have about 75%-80% winrate. Still unsure if the decklist is optimised or if there's other better strats I haven't thought of yet.

All of my latest Heroic Galakrond (League of Explorers) decklists Decklist: https://imgur.com/a/jIRca63 Deckcodes: https://pastebin.com/ePqGX8aR

Most of the decks are OTK decks. If Rivendare Hunter isn't safe enough for a boss, then I normally just use Mechathun Warlock for a more consistent deck.

Kriziki: Note that the area spells (Shriek & Defile) isn't for early game. It's more for late game, to clear the Reborns or 1-hp minions from Volazj / Vivid Nightmare. Shriek is also useful to dump spells from your hand, for the Cataclysm spell at the end.

Slipstream: Linecracker + BEES seems to be faster than Mechathun Warlock. Druid have newer Discover/Dredge cards that increases the chance of getting the Linecracker & BEES combo by turn-7. A riskier strat is to use mana ramp cards and do the combo before turn-7. But these cards will be useless if we don't get the combo pieces quickly, so I decided not to use this strat.

Togwaggle: I'm using Big Priest, which isn't the fastest deck (usually turn 10-12), but has been the most consistent on my testing. Other alternatives I've tried:

• Stickyfinger Mage (similar to my old deck): AAEBAf0EAvbWA/yeBA5NigGSBMsEhLsCtPwCv6QD9KsD+7ADhLEDiLED1OoD7O0En6QFAAA= Will be fast if we got Platebreaker early and enemy have a strong weapon. But sometimes could go really slow as well, and isn't as safe as Big Priest.
• Mechathun Warlock: AAEBAcn1AgidxwLO6QLx+wLrrAOIsQP21gOa1AStogULigGSBJfBAo/HAufLAsfTAsPzAoSxA5XeA5PkA7LtBAAA Not as safe as Big Priest as well. Recent Cataclysm nerf also made it harder to get a turn-8 win, which slowed down the deck even more.
• Rivendare Priest: Can't get this to work. Hard to deal with the candles if you play a spell-only deck. And playing the Rivendare + Zerek's Cloning Gallery is unsafe.

Rafaam: This boss is not completely safe if we want to play a fast OTK deck. Because once he turned into Galakrond, he'll easily spawn multiple 8/8s which can't be easily cleared. We'll die quickly if we don't get the key combo pieces on time before the Galakrond phase.

I added Urchin Spikes in case we'll need to clear his huge board during the Galakrond phase.

Note that the AI will end their turn immediately after the 5th invoke (when turning into Galakrond), and will not bother attacking with any remaining minions on their board.

Using this Mechathun Warlock might be slightly safer than the Rivendare Hunter deck. AAEBAcn1AgadxwLO6QLx+wL21gODoAStogUMigHnywLy0ALShgPtrAOEsQO9vgOV3gOT5AOD+wOxnwSy7QQAAA== The strats is to have Doomsayer / Depth Charge before 5th Invoke. Then, use 0-mana Twisting Nether after triggering the Bonelord, to get rid of his first waves of 8/8s during the Galakrond fight. It's still not completely safe if the combo can't be triggered quick enough, or the 0-mana Twisting Nether isn't useable yet by the time the 8/8s are spawned.