
This artifact doesn't untap during your untap step.
{T}: Add {C}{C}{C}.
{4}: Untap this artifact.
Grim Monolith has 4 printings, first in Urza's Legacy (1999). EDHREC ranks it #674 among Commander cards. It appears most in Kinnan, Bonder Prodigy decks (9,764 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.