Notes & Combos
The way to Diamond 1 was rough this season with Floo, Swordsoul, and Branded Despia around. This clean version of agents work best for me in terms of consistency and going through multiple intteruptions. There are 2 line-up: Earth + extender and Diviner. Both ends with a Kristya lock. Kristya turn 1 is an auto win against most meta decks that needs to special summon to start their stuff.
Core cards for ED : Masterflare Hyperion, Moon, Parshath.
Black rose comes up sometimes where I have to blow the field before fetching kristya (Earth + Corobane). Shenshen is an auto win against some decks like Salamangreat, or Dragon Link. Careful it can backfire sometimes. Accesscode is there to push for game.
I swapped Maxx C several times in Diamond II because everyone was playing Floo and Eldlich Branded. Tech cards like Imperm, Artifact Lancea, and Droll works well with the deck. Adjust it with your needs. I wanted to make a guide but the notes weren't enough to explain, so feel free to reach me out in Discord or comment out here.
Top Secret Packs used

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You can find the replays here: 165-052-283
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There are 3 public replays, 1st one is insta win against Dragon Link with Kristya lock under max c.
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2nd one is a clean combo of the optimum turn 1. Kristya Lock with eva and orange light in hand.
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3rd one is from previous season when Halq was legal. Managed to setup TD Collosus, Kristya, Auroradon, Borreload on my 1st turn but was wrecked with RA sphere mode. Finally won by suiciding eva.
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The combo line here is to have 2 fairy on boards, then you make Link 2 Moon and send Majesty Hyperion. Combo goes off from there.
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It does not require Trickstar to work. You can just use corobane without the light stage, since if you go for Kristya you will replace it with Sanct in Sky anyway.
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Reasoning is there to make that extra body which is usually getting you another fairy.
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Lightstage does come handy against backrow decks, and helps baiting ash a lot.
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It helped me on some games.
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Here is a link to a general agent guide: https://docs.google.com/document/d/1P8unU-SralpaWOtivISmsMoyoHn-lVqnRfkgfP052BM/edit

I'm planning to build the deck next and have no experience with it so I wouldn't know but how does this list feel in comparison to the Mystic Shine Ball engine? Do you find this one is better? And thanks!

This list is more consistent and can play through interruptions. The mystic shine ball list can do more stuff, but less consistent. I usually go for kristya lock which is enough against most deck. I prefer this list more for grind events like DC cup.