He also provides a huge array of abilities, although its interesting that the un-melded version wants you to go creature-wide while the melded version is arguably better suited for a board of larger creatures or a controlling strategy by forcing lots of discards
In a slow enough format it might prove very good, but it costs five mana, which is kind of bad
Take Knock Outs, as appropriate, by using Roaring Moon exs Frenzied Gouging attack, which instantly Knocks Out your opponents Pokmon in exchange for Roaring Moon ex doing 200 damage to itself, Roaring Moon exs Calamity Storm, which does 100 damage plus 120 more if you discard a Stadium card in play, or Roaring Moon TEFs Vengeance Fletching, which does 70 damage, plus 10 more damage for each Ancient card in your discard pile
From beautiful Illustration Rares to common cards, take a look and see if you can find what you are looking for