1. How does the card stand on its own? Is it good, bad, or have potential? Is it worth being played?
-On it's own, it's not so hot. It was built to run with the other eeveelutions. With an actual eevee based deck, however, this guy has the potential to be an annoying and somewhat powerful card.
2. What popular metagame decks is it used in?
-Nothing I've seen, as of yet, but I know it will be used with multi-type eeveelution decks, and straight Umbreon-Espeon Decks. I think the latter of the two has more potential, jsut for sheer swarming purposes.
3. What combos can you use it with? How so?
-As stated above, it pretty much only works with other eeveelutions. Some people will probably try to run it in a multi-type, all version eeveelution deck. Its not a bad idea in there, but I think the non-prime Umbreon from UD is a better bet for that. Umbreon Prime is meant to be more of a constant attacker, with SSU possibilities. Swarm with him, and when he's close to dying, abuse his power and SSUs to pull him back, and send up another one. Works very well with Umbreon and Espeon MD, and possibly a tech of Espeon Prime for type advantage.
4. Give it a rating, and explain why you have given it that rating. You can also rate the card by rating the thread itself (out of 5 stars).
-3/5. I think its a neat card with a lot of potential, but if definitely requires you to build specifically around it. It's a decent card with a neat power. Its biggest flaw is taking 3 energies to attack. It works only with other eevees, so its not a versatile card, but I'm a big fan of "structured" cards (cards that work well with only certain cards, like Nidoking/Nidoqueen, Mothim/Wormadam, etc).
5. How's the artwork?
-Very nice for a Prime card. Although, I'll admit, I'm getting really bored with primes and their extreme close-up artworks. Leaves no room for cool poses, or artwork of the pokemon actually using an attack.