Being an enchantment is pretty cool since it's harder to remove than a random creature, plus the actual effect of preventing damage helps to stabilize you in the later turns of the game
It certainly wont stop them from attacking you with their Pokemon and taking Prizes to fill their hand back up
Three Psychic energy is so much to ask for, especially when Psychic-type Pokemon really don't have any acceleration
Pokemon Card Strategy: So as far as strategy goes, this would be an amazingly good card to pair with Kyogre EX from this same set because Kyogre EX has a move that does 50 damage to 2 of your opponent's Pokemon so you could put Groudon in for awhile, spread damage around for quite a few turns with Tromp and then put Kyogre into play and use the move that does 50 damage to 2 Pokemon, or you could do it the other way, use Kyogre's move that spreads damage around a few turns, then retreat it for free with its first move, put Groudon into play and then use Giant Claw and do 120 damage every turn since the Pokemon you'll be facing should all have damage on them
Im guessing that neither card is good on its own, but its flexible enough on its own or with other dragon synergies, that it will be good
