
If it's neither day nor night, it becomes day as this creature enters.
Whenever day becomes night or night becomes day, look at the top two cards of your library. Put one of them into your graveyard.
Celestus Sanctifier has 2 printings, first in Innistrad: Midnight Hunt (2021). EDHREC ranks it #30,755 among Commander cards. It has 6 official rulings.
Cards that show up in the same decks on EDHREC.