just sleeves standard card game Gamegenic and sleeve Gamegenic Just Sleeves: Standard Card

Whenever one or more other creatures you control enter, if they entered or were cast from a graveyard, create a token that's a copy of one of them

In most of those older cards, the text might read something like: Whenever this creature would be destroyed, instead tap it, remove all damage from it, and remove it from combat. Thats basically the reminder text for how regeneration works

Of Herbs and Stewed Rabbit This is like Horn of Gondor for white food decks, maybe

One of the few special categories of Main Deck monsters in this game are Spirits

Dark Hole YS15-ENL14 (YuGiOh Starter Deck: Dark Legion | YuGiOh Cards) prices are based on the historic sales

In lieu of this, to kind of touch on OPs original question, the push for waifu trainers stems in correlation from those NSFW/doujinshi works of Pokmon trainers