Descend 8 — When you cast this spell, if there are eight or more permanent cards in your graveyard, copy this spell twice. You may choose new targets for the copies.

Return target permanent card from your graveyard to your hand. Exile Bygone Marvels.

Target creature gets -3/-3 until end of turn. Target player mills three cards. (They put the top three cards of their library into their graveyard.)

Put target permanent on top of its owner's library.

Investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Each player sacrifices all permanents that are rare or mythic rare, then each player reveals their hand and discards all cards that are rare or mythic rare.