Unless the card is considered a larger staple in the format, synergistic archetypal specific cards like Codsworth tend to rise and fall as demand soars for decks that want to use it
Summon: Bahamut Yes, its 9 mana, but its one of the best colorless cards to cheat into play
Umbreon #41Rare $161.41 Umbreon #24Rare $35.78 Umbreon #32Rare $67.43 Umbreon #10Holo Rare $96.83 Umbreon #22Holo Rare $172.83 Umbreon #XY96Promo $112.40 Umbreon #120Rare $8.97 Umbreon #130Uncommon $0.31 Umbreon #130Uncommon $0.44 Umbreon #59Rare $0.41 Collector's Pin Two Pack Blisters [Umbreon] Single Strike Urshifu V #TG18Ultra Rare $6.04 Single Strike Urshifu VMAX #TG19Ultra Rare $10.22 Single Strike Style Mustard #TG28Ultra Rare $1.57 Flareon #TG1Ultra Rare $25.20 Single Strike Urshifu VMAX (Secret) #TG29Ultra Rare $4.70 Umbreon VMAX #TG23Ultra Rare $120.68 Houndoom #TG10Ultra Rare $4.06 Sylveon V #TG14Ultra Rare $79.31 Mimikyu VMAX #TG17Ultra Rare $74.62 Rapid Strike Urshifu V #TG20Ultra Rare $5.81
Even then, by modern Pokemon card standards, the damage dealt is pretty insignificant
You can draft the same one a second or third time and get unique experiences
If a spell has the kindred card type and one of the outlaw creature types, Double Down will copy it