Your search for "mesmeric sliver 620" revealed the following:
Mesmeric Sliver - Surprise Slivers (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Michael Bruinsma Card Text: Surprise SliversAll Slivers have When this permanent enters the battlefield, you may fateseal 1."
Charmeleon - 169/165 - Scarlet & Violet 151 - Illustration Rare - KSA MINT 9 is available at 401 Games Canada! You can find lots of other Pokemon Singles products as well as more great items from Collector's Corner!