Its sort of like Vaporeon from Mythical Island, and no points for guessing, but Dawn would be a major play to get Palkia EX more Energy, transferring Energy from, say, Articuno EX to Palkia EX or even Gyarados EX (without the hassles of getting Eevee and evolving it to Vaporeon)
Conversely, cards that are heavily played or damaged may struggle to attract buyers, even if they are rare
Plus having the ability to go tall and wide with one card is great value
Web-Shooters would let me tap target creature an opponent controls when equipped creature attacks
For me, running Allures and 2-3 Terra solves this error with running only 1 Island
Polymorphists Jest: From M15 comes an incredibly useful tool that functions as a straight up Evacuation against any creature based hate