In addition to the gorgeous Terapagos ex Secret Illustration Rare card, theres also the Bulbasaur and Squirtle Illustration Rare cards, which complete the thematic triptych of Kanto Starter Pokemon in cozy spots that was started way back in the Obsidian Flames set
Interestingly enough, many of Mega Evolution's most valuable cards come from Ascended Heroes, with Team Rocket's Mewtwo ex being one of them
You can mix and match and choose which you like to play the most, but I like to focus on cards that help with card advantage, and more importantly, cards that help with equip costs
I think each of them turned out pretty well
You can't self-exile, and you need five targets, it doesn't say, "up to five." But you should be able to at least recur it once, if not more, over the course of the game