More modern sets from the Sun & Moon era and after feature valuable full art cards, like the Charizard you can find in Burning Shadows
Make the effects different somehow
Spoiler warning for a 20-year-old show: this card references an episode where the depicted character, Zhao, kills the moon spirit during his invasion of the north pole, which shuts off the abilities of water-benders, who draw power from the moon
Remember how cool Darth Vader was, but then the prequel series gave us little kid Anakin
This is a fantastic way of swarming the field
Taking inspiration from some silver-border mechanics, not only does SSSPBKASSSO have two copies of Panharmonicon with unique art, but if you happen to get both copies of Panharmonicon on the battlefield together, make sure to put them side by side, so you end up with this Panharmonicon panorama: Siege Rhino Siege Rhino might not jump off the page as an obvious inclusion in Signature Spellbook: Seth, Probably Better Known as Signature Spellbook: SaffronOlive , since it's a pretty spiky (which is the opposite of spicy) card, at one point being the best card in Standard and a Modern staple
