If we knew the other movie poster cards we could make estimations of those prices as well, but for now, were just speculating
- Dragonite UNM 151, from Sun/Moon: Unified Mind which attaches one electric energy and one water energy to one of your Pokemon

XY Single Pack Blister [Dragonite] Dragonite Collector's Pin 3 Pack Blister $309.00 Dragonite EX Box $263.13 Kanto Power Collection [Dragonite EX/Pidgeot EX] $493.26 Kanto Power Mini Tin [Dragonite] $36.03 Dragonite Dragons Tin $65.93 Checklane 2 Mini-Pack Blister [Dragonite] $24.99 Dragonite Dragons Tin (Walgreens Exclusive) $52.73 Dark Dragonite #5Holo Rare $240.97 Dark Dragonite #15Rare $92.41 Dark Dragonite - 15/109 (EX Team Rocket Returns) #15Holo Rare $125.49 Dark Dragonite (22) #22Rare $38.95 Dark Dragonite (5) #5Holo Rare $180.45 Dragonite #2Holo Rare $189.66 Dragonite #18Rare $15.29 Dragonite #5Holo Rare $30.59 Dragonite #83Holo Rare $21.44 Dragonite #96Holo Rare $4.09 Carracosta #45Uncommon $0.28 Pyukumuku #52Uncommon $0.26 Magmar #21Common $0.20 Karrablast #12Common $0.13 Wimpod #50Common $0.29 Fomantis #15Common $0.57 Bounsweet #17Common $0.21 Fletchinder #31Common $0.15 Victini #26Holo Rare $1.60 Slowpoke & Psyduck GX #35Ultra Rare $142.93

It works well in decks dedicated to ramp with cards like Reshape the Earth, but its rather inefficient otherwise
You don't even really need to have utility dorks or silver bullets for this to be a very good card to add, simply a good curve of monsters to choose from
When they ETB, they give your team and themselves power and toughness boosts equal to your creature count and an evasive keyword