Stealing Potions in Atlanta
Battle Hardened CC Teklo Style

All credit goes to JuiceJames for his list. I just got to jam it!
The Core!
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Battle Hardened CC Teklo Style

The Core!
Threats.
Staying Alive....block block block block....staying alive.
What I’d Change / Takeaways
That said, there are a few things I’d look at adjusting:
Blue attack slot Mechanical Strength is fine, but in practice it’s usually pitched or blocked with. When Teklovossen, the Mechropotent is online, I’d rather have a free attack than a larger one that costs three resources. I’d likely swap those for Liquid-Cooled Mayhem (blue) to improve endgame pressure without competing for pitch.
Arcane Barrier access The Verdance matchup really highlighted how important it is to find instant-speed Arcane Barrier Evos like Evo Speedslip and Evo Heartdrive or Rusted Relic early. Having access to AB while moving forward on your Teklo Leveler and tank plan is quite nice.
Minor defensive flexibility A singleton Oasis Respite is something I could see testing. It helps smooth awkward hands, buys a turn in burst matchups and arcane matchups, and plays well with the overall fatigue plan without needing additional setup.
Play reps over list changes More than anything, this deck rewards clean fundamentals. The Verdance loss in particular was very close and likely winnable with better early sequencing. Getting more reps into Verdance, Arakni, and Kassai would probably improve results more than any single card swap.
Despite making the deck choice at the last minute, it performed well and felt cohesive. With a bit more practice and a small endgame optimization, I think the list is very real.
Thanks a lot to JuicyJames for the list and sideboard guide — it really helped, and the deck feels very well tuned.
That being said, I had cut the Amulet of Echoes, and there were two Oscilio players in the Top 8 — but I dodged them this time.
Hope this was helpful and if you're interested in playing Teklo join the purple discord or the Teklovossen discord, people are really helpful and friendly.
-Rob