I don’t think it’s that bad, we have an adaptive evolution Eevee in surging sparks and crispin to power this up in one turn, so they either ko the flareon and have to deal with the other attacker you powered up or take 280.
Probably won’t work very well, but you can charge up hydreigon ex with the paldea evolved hydreigon that discards the top three of your deck and accelerates any energy you find there
Yes, there is no text stating otherwise. However, with it being a fossil, this isn’t a great line. May have some meme applications, but otherwise nothing insane