I was lucky enough to pull Umbreon GX and its remained one of my top favorites from the shiny vault
Weighing: Weigh your cards with jeweler scales, like this portable digital scale from Amazon
He uses a "Toon" deck, which uses Toon World to make Toon versions of his monsters
Stadium cards from Diamond & Pearl through Call of Legends should be considered Trainer - Stadium
Notably, since the Link-1 "Magical Musketeer Max" has no restrictions on its number of Link summons per turn (Unlike "Fiendsmith's Requiem"), a common play is to repeatedly Link Summon Max, use Max as material for other plays, then shuffle it back from the GY with Fiendsmith effects
In fact, Nitz has stated that this black border Blastoise still on the sheet was the first English Pokmon card printed on foil