serialized mtg cards tcgplayer most now exist as pets of societys elite. The Aetherspark (Serial Numbered) -

The forgettable Masked Gorgon, which becomes a quirky attacker and blocker once eternalized

You simply sacrifice the token you generate to Sephiroth to draw a card when it enters or attacks, and the token will respawn to keep the engine rolling

This is a very broad category, as almost any part of the card can be part of the theme

Until then this card is way too narrow and only filler when it does get a slot making it not A cube material

Next up, we have Hemsleys Dimir Reanimator: Creatures (2) Planeswalkers (2) Lands (24) Spells (32) This is basically the exact opposite of Storytimes approach

almost free for Constructed decks in 1v1