Monsters Special Summoned from a card effect (Monster, Spell, or Trap Card) that is Continuous (does not leave the field), are Special Summoned in an unused Card Zone adjacent to the card (adjacent does not include diagonal Card Zones)
In fact, all of the video games at least include characters from the anime
Deck lists are from Metagame.com, which had a few missing or illegible cards in some of the lists
It doesn't seem to be running yet, as there's no mention of the card on the UK Pokmon Center website
If summoned by a Normal Summon, the card is destroyed
The relationship between total population, gem rate, and market value is nuanced and specific to each card, and the collectors who take the time to understand those relationships are the ones who make the best decisions about what to buy, what to submit, and what to hold