More creatures were being summoned
This takes up such a strange position on this list because Ad Nauseam requires a lot of build-around to work
They're not strong enough for competitive play, and in most casual play groups I've been in, people ask that cards like Jokulhaups and Decree of Annihilation aren't included in decklists so it's not difficult to extend those house rules to other similar spells
Haste was obviously also welcome when placed along side the other big creatures in the deck, and the option to sacrifice it for a boost meant that you could usefully cash it in when it was no longer useful or you had multiple copies
Any deck that floods the board with cheap creaturesoften elfball decksturns this into a busted bomb that takes over games in short order, typically so they can finish off with a Craterhoof Behemoth
Four 100-card decks star Terra, Cloud, Tidus & Yuna, and Yshtola each perfectly capturing its games vibe through signature mechanics