Like most Magic: The Gathering cards, the value of Dark Ritual 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 (The List)
However, although it comes out by destroying the opponent's effect, the effect destruction is a weak point, and it is difficult to operate due to the inconsistency
Mulligan You want a starting hand with some low-cost characters for turns 1 and 2, and ideally a few Heros and Hero-buffing cards
Anime and manga memorabilia collectors especially those building Kazuki Takahashi tribute collections in the years since his 2022 passing
Sorry, not there yet technologically
This works as a protective spell of course, but it has the potential to finish a game by making blockers irrelevant