There's no way to have the ability trigger if there aren't enough card types, even if you intend to raise that number in response to the triggered ability
Like most Magic: The Gathering cards, the value of Spectral Adversary 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 (Innistrad: Midnight Hunt Promos)
This card would be great in a multiplayer format, essentially forcing one of your opponents to help you out for a turn
There was a time when only [[Doubling Season]] did this effect, but recently we have had an influx of these types of cards with [[Kami of Whispered Hopes]]
The anniversary marks 30 years since the Pokmon Red and Green games were released in Japan, marking the birth of the media franchise.
Only one way to find out, and that's to do what we always do on Innistrad: ignore the consequences and charge right into the darkness with no regard for personal safety or preparation whatsoever and why are you thinking let's just go Day & Night, Daybound & Nightbound Not everything on Innistrad is as it seems