Gilgamesh, Master-at-Arms Series: From Final Fantasy V and later Spoiler Level: Low Well not exactly the unique effect, with multiple cards over the years representing similar abilities
For example, if three Fraying Sanity Auras are attached to one player who had four cards put into their graveyard this turn, X will be four for the first ability to resolve, eight for the second, and sixteen for the third.
in this case, the four-mana Mishra, Claimed by Gix and the three-mana Phyrexian Dragon Engine
Special Cases: I added specific instructions for "Saga" cards, which require vertical artwork, asking the LLM to create a prompt describing a vertical composition
While Proposal is the only one that could possibly be 93/94 legal, Splendid Genesis and Fraternal Exaltation arguably fits under a broader old school umbrella (being "Premodern" and what-not)