pokemon scarlet and violet sleeved booster pack & Twilight Masquerade the added double star as an extra rarity symbol Pokemon Scarlet & Violet Sleeved

I did some digging and found a list Gavin Verhey used to Top 8 Regionals way back in 2006: "The Sizzetron" Creatures (5) 3 Simic Sky Swallower 2 Keiga, the Tide Star Spells (32) 2 Electrolyze 3 Repeal 4 Mana Leak 4 Remand 1 Demonfire 2 Pyroclasm 2 Tidings 3 Wildfire 4 Compulsive Research 3 Simic Signet 4 Izzet Signet Lands (23) 1 Island 3 Breeding Pool 3 Shivan Reef 4 Steam Vents 4 Urza's Mine 4 Urza's Power Plant 4 Urza's Tower Sideboard (15) 4 Pithing Needle 4 Imaginary Pet 4 Annex 1 Demonfire 2 Pyroclasm The list I played was a bit different, but you get the gist

Then when another Insect you control dies you mill two and put it onto the bottom of your library, so that's fodder for the lands/Insects getting played and stops Insect reuse and abuse

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packets you choose will add dual lands in the colors appropriate to your deck