Ending the turn takes some unpacking for what it actually means, but when everything goes to the graveyard from the wipe, theres no time for death triggers to resolve, which can be huge upside
There are only two caveats: the Retreat Cost of two and the attack cost of three Psychic Energy
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
These days that will never do
Commanding Conclusion Thirst for Knowledge | Illustration by Andrea Piparo Im actively excited enough by Counter Intelligence that Im willing to say Edge of Eternities Commander gets a pass