Legion Angel was an Arena hero, rather than seeing play at in-person events and Pioneer doesn't really have a standout Angel, but more of a squad
By taking a sneak peek at the Artifacts in the deck, its clear that this is both a Sunforger deck, and also a combo deck, that runs Helm of the Host and Sword of Feast and Famine
A x2 weakness to dark Pokemon isn't too bad because dark Pokemon aren't really used that much, a -20 resistance to Normal type Pokemon can come in handy because a lot of quick start Pokemon in decks are normal type and basic so a -20 resistance will make them not be able to do any damage to Giratina at all
The same logic also backs up the idea that Treasure is harder to abuse as part of a great draw which is critical, since that would erase most of the benefits of a smoothing mechanic
Remove the abilities from an X/X to destroy it, or even use it on a planeswalker that's temporarily a creature to add loyalty abilities to anything while leaving the opponent with only a husk
Here, the characters were not constrained to appearing once on their own cards, but they could show up multiple times all through the drop