These days, Pokmon releases new merch, cards, and games regularly
The strongest monster he can easily summon is the 2000-ATK Patrician of Darkness (his strongest is Chakra, but he will never, ever get it out), he has all of two Spells - one is Chakra's Ritual Spell and the other has a random effect, and his monsters are a jumble with no unifying type or strategy and weak abilities
Its not terrible as a Commander either, since you can protect it with Whispersilk Cloak and win with Commander damage
When trying to catch a wild Pokmon, your goal is not to knock it out but to weaken it so that it's easier to catch
In the International releases, the list is split between TCG Advanced and TCG Traditional
Also, during your opponents End Phase, you can use Metaverse to activate Savage Colosseum,which gives you a Unique move that allows to destroy your opponents Attack Position monsters that failed to attack