Unlike extra deck monsters which you can access whenever you like, with Ritual monsters you have to have a ritual monster card, the correct ritual spell, and the monsters from your hand/field to tribute
As I said, this is the rotation with the most card losses, and it will be impossible to go over all of them, so allow me to just highlight the ones that really, really hurt the most
The ability to search your deck for any Pokemon at all without having to pay an additional cost is huge
It potentially disrupted their strategy and limited their options
Oinkologne ex Box (available September 1, 2023): Includes an Oinkologne ex reprint card from Scarlet & Violet base, a jumbo version of Oinkologne ex, a holographic card featuring Lechonk from Scarlet & Violet base, and four booster packs