
Whenever you cast a historic spell, target player mills two cards. (Artifacts, legendaries, and Sagas are historic.)
Diligent Excavator has 1 printing, first in Dominaria (2018). EDHREC ranks it #18,592 among Commander cards. It appears most in Emry, Lurker of the Loch decks (1,295 on EDHREC). It has 4 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.