Each "Spellbook"-related "Prophecy" monster is based on a Tarot card of the Major Arcana
That was thanks to a licensing deal with Magic the Gathering publisher Wizards of the Coast
Gym Heroes introduced well, Gym Leaders, and each Pokemon was introduced as being owned by a Gym Leader
Protection Magic is a Instant card in Magic: the Gathering MTG
That said, the cards I loved the most from Yugioh were the big juicy 'pay life' cards, stuff like Mirror Wall could be devastating (better than Mirror Force if you have a reasonable board!), Solemn Judgement was insane, both were cards people in my meta hated because you paid life (they never noticed that Mirror Wall was a Trap card or something idk, I had played Magic before at least), these were among my favorite cards, at least I got my Judgement really easily, they thought it was a terrible card, I mean, half your life for a better Force of Will, who would play THAT poop tier card (I obviously would lol)
Modern simply wasnt ready to deal with a creature that big, that quickly, and that resilient to common removal spells