Lastly, I want to mention that the art on the card (done by Ron Spencer) is phenomenal
If its owner does not have an unoccupied Zone on the field to return it to, the card is instead sent to the Graveyard
Mythical Island may only be a mini-set, but it has dozens of meta-changing, headache-inducing cards you simply need to own
Now that I'm done yapping, here's how I would separate the obscure characters of GX into 2 categories: Decks that I can realistically build even if there are a few anime exclusive cards missing: Abidos the Third The Admiral Bauregard & Brier (The Duel Giant) Brron, Mad King of Dark World Dark Magician Girl Dimitri (Yugi's stolen GX era deck) Don Zaloog Fonda Fontaine Franz Gravekeeper's Chief Jinzo Kagemaru Kaibaman Kozaky Lorenzo Makoto Missy Princess Rose Reginald Van Howell III Chancellor Sheppard Sky Scout/Harpys Brother (Birdman) Skull Knight Slade Princeton Sorano T-Bone Decks I would rather not build either because we haven't seen the characters play enough cards or because too many (or in some cases all) of their cards are still not printed: Alice Alien of Light Amnael Bob Banter Czar Dr

The level 2 and level 3 class abilities of Gourmand's Talent won't trigger if you already gained life earlier in the turn on which it gained those levels, even if you gain life again later in the turn
In terms of the original Base set, Browning remarks that there's certainly the "nostalgia" factor to explain it's popularity