You can obtain the Dragonite (3-Diamonds rarity) card by opening Mega Shine from Mega Shine set
Not only that, Galazeth Prismari makes for a decent Commander that cares about artifacts and slinging spells
the video instead seems mostly geared towards warning whoever is in possession of it now that, thanks to the cards rarity, theres no way it can be sold without attracting the attention of people who know what it is and who legally owns it
Hydro Pump 80+ Weakness: +20 Retreat: Rarity: It crushes its foe under its heavy body to causefainting
The first one, the one we will likely use the most, allows us to hit very hard into the active Pokmon while softening up something on the bench
Because the format already places heavy incentives on putting random stuff into your graveyard (which is typically a non-interactive experience), I think its extremely important that the eventual output be something on the table