Such a thing would probably only prevent attacking or blocking but still, there is quite a lot of design scope to cover just in the realms of fair Pacifism like cards that cantrip
You can only Special Summon "Shiranui Squiresaga(s)" once per turn
While new mechanics shake up the game with each new set, it's not often that a new resource comes along to change the shape of the game
15 and aims at providing a fun, accessible experience for every level of play
Laughing Mad Airship Crash Prishe's Wanderings Auron's Inspiration Stroke of Midnight Swallowed by Leviathan Overkill Mage Siege (Lindblum, Industrial Regency // Mage Siege) Sephiroth's Intervention Eject Venser, Shaper Savant Cryptic Command Akroma's Will Light of Judgment Moogles' Valor Teferi, Mage of Zhalfir
For Australian collectors, the practical split is by use case: the Booster Bundle and ETB are the cleanest pack-opening options, Mini Tins and 2-Pack Blisters suit smaller buys, and the UPC, Ditto Premium Collection, Figure Collection and Espeon and Umbreon Battle Decks are the sealed-collector watch items if allocation is tight