Interesting how the pack arts make the Origin Formes of Palkia and Dialga look a lot better than they actually are in the Legends Arceus game. I have one major objection against each forme : Origin Palkia - Looks like a mangled centaur. Nice design for the legs, but the proeminent pearl shoulders make the absence of some stylish arms with big claws even more flagrant.
Origin Dialga - Aw man. Looks like a random Necrozma took over the poor thing, just look at the "feet". Besides, that humongous diamond IN THE MIDDLE of its neck is (and looks) just painful. In the gen 4 design, I particularly liked the fact it had armor, like a diamond chestplate (pun intended) and that iron tutu on his back. All of that just plainly disappeared, to become a quite ugly blue ring. Hm.
But back on the main subject, I love the pack arts. I hope the Origin forme cards will feature our Time & Space lords in the right angle, because an artwork with the quality of Legends Arceus just won't do. For those patient enough, thanks for reading me !
P.S.: There will probably be another Origin Giratina card, it's just not yet teased. And I'm willing to bet that if Palkia and Dialga will have Origin Forme VSTAR cards, Giratina will too. It just completes the trio.