Charizard is a name that carries plenty of weight in the Pokemon TCG with many valuable versions of the Pokemon printed throughout the games history
Also, while Origin Forme Palkia-VStar is in the rotation, it also appears in many decks
And of course, many group hug decks end up winning via alternate wincons like Approach of the Second Sun and Thassa's Oracle, which I wholeheartedly agree is super cheesy
7: You get an emblem with "You may play lands and cast permanent spells from your graveyard." Legendary Planeswalker - Wrenn Wrenn and Seven +1: Reveal the top four cards of your library
Plus, you have to have at least two or three copies of Jalira in your deck to think about it as anything approaching a reasonable combo, and hitting a Jalira off your Jalira is terrible
The other coins you asked about also all came from theme decks, which can again be referenced in the Bulbapedia article