While Reserved List cards are especially likely to be bought out (which is the most common cause of a price spike) thanks to their low supply and the Reserved List itselfwhich offers a wall of protection around speculators, who don't have to worry about a surprise reprint ruining their investmentolder, low-supply Modern, and Commander cards deal with the same issue, just on a smaller scale
Squee, Goblin Nabob Squee is
Its second effect is great for generating value too, able to give you free Trap cards from the top of the Deck whenever a Trap is sent from your S/T zone to the GY
Buying an Ultra Premium Collection can be fun, but you do always run the risk of missing out on chase cards as you do with any other Pokemon TCG product
the Maximum Monsters were designed as Level 5 monsters that are able to utilise their effects without the need to be in Maximum Mode, the Deck was given swarm and beatdown tools through cards such as "Elegant Egotist" and "Triangle Ecstasy Spark", and Rush Duel adapted the core "Harpie" strategy from the OCG / TCG wherein most of the Deck's members are treated as "Harpie Lady" ("Harpie Lady Sisters", in the case of the Maximum Monster) while on the field or in the Graveyard
C Common Aquaactress Guppy X WATER Level 2 [ AquaEffect ] ATK 600 DEF 600 Once per turn: You can Special Summon 1 "Aquaactress" monster from your hand