
Each player mills three cards. Then you return up to two creature cards from your graveyard to your hand. (To mill three cards, a player puts the top three cards of their library into their graveyard.)
Unseal the Necropolis has 2 printings, first in March of the Machine (2023). EDHREC ranks it #9,108 among Commander cards. It appears most in Captain N'ghathrod decks (1,697 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.