[-X]: Search your library for an artifact card with converted mana cost X or less and put it onto the battlefield
For example, around 1 in every 144 boosters contained a Masterpiece for Kaladesh but for Amonkhet, it was 1:129
Replayability comes from: Games diverging into meaningfully different paths, Matchups that dont feel solved after the first turn, Decks with distinct strengths, weaknesses, and edges over the competition
Thebes, meanwhile, is a location that grants you additional lore whenever a character banishes another character while there essentially granting the ability Floodborn Robin Hood has from Into the Inklands
UR Ultra Rare Dinomorphia Intact X TRAP Counter When a monster effect is activated, while you control a "Dinomorphia" card: Pay half your LP