Cards like Adeline, Resplendent Cathar and Rick, Steadfast Leader quickly make your board state threatening
Available exclusively through Secret Lair, the Commander deck was spoiled slightly when a shipping error led to some of the mono-red cards being highlighted before an official announcement with Dandan deck shipments

Mime Psychic Uncommon 111/132: Blaines Quiz #2 Trainer Uncommon 112/132: Blaines Quiz #3 Trainer Uncommon 113/132: Cinnabar City Gym Trainer Stadium Uncommon 114/132: Fuchsia City Gym Trainer Stadium Uncommon 115/132: Kogas Ninja Trick Trainer Uncommon 116/132: Master Ball Trainer Uncommon 117/132: Max Revive Trainer Uncommon 118/132: Mistys Tears Trainer Uncommon 119/132: Rockets Minefield Gym Trainer Stadium Uncommon 120/132: Rockets Secret Experiment Trainer Uncommon 121/132: Sabrinas Psychic Control Trainer Uncommon 122/132: Saffron City Gym Trainer Stadium Uncommon 123/132: Viridian City Gym Trainer Stadium Uncommon 021/132: Blaines Ninetales Fire Rare 022/132: Brocks Dugtrio Fighting Rare 023/132: Giovannis Nidoqueen Grass Rare 024/132: Giovannis Pinsir Grass Rare 025/132: Kogas Arbok Grass Rare 026/132: Kogas Muk Grass Rare 027/132: Kogas Pidgeotto Colorless Rare 028/132: Lt

Compared to other expansions, I like Twilight Masquerade and its far from the worst in the Scarlet & Violet era (Im looking at you, Shrouded Fable)
Four things drive almost every valuation you will see: Rarity and print run, the starting point for any premium Condition and grading, which can multiply or shrink a price Edition and print variations, where small differences mean big gaps Errors and misprints, the quirks that occasionally create value Once you know what to look for, the final step is knowing where to confirm a cards current market price
Pair them with the right dual lands