Ritual Magic Cards require specific tributes (for example, if you activate Black Illusion Ritual, a Dark-Eyes Illusionist is needed)
Like most Pokmon cards, the value of Arceus depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (DP Black Star Promos)
It still has the usual Fighting type problem of being unable to touch Ghost types until it gets Earthquake with the TM
The former is a 3/2 for three mana that makes a 0/1 Goat on arrival to the battlefield and can sacrifice to scry one at any time for no tapping or mana use
In the video games, the Ferris wheel is only accessible to couples and has thus been used as shorthand for character shipping in Pokmon fan art, fan fiction, and other fan content
Keep the pressure on by sacrificing your expendable tokens to draw cards with Village Rites or trigger massive life swings with Bastion of Remembrance