Thankfully, Pokmon has given us so much choice of where we want to take our collections or our playing decks and allowed us so much freedom of unique choice that you really can collect exactly what you want.
Sam Murakami decided to change the name of the card to Slifer, after then-producer Roger Slifer
Toad being limited may suck, but you can actually use him more than once in game, as when they're sent to the graveyard, you can add a WATER monster from your graveyard to you hand
With eight expansion packs to choose from the three Genetic Apex launch packs, two Space-Time Smackdown packs, and the singular Mythical Island, Triumphant Light, and Shining Revelry boosters theres a wealth of options to build your decks
You can only use this effect of "Ningirsu the World Chalice Warrior" once per turn