Grim Monolith doesn't untap during your untap step.
Tap: Add 3 to your mana pool.
4: Untap Grim Monolith.
Part prison, part home.
Near Mint Condition
A card in Near Mint condition shows minimal to no wear from shuffling or general play. Cards classified as Near Mint/Mint are generally indistinguishable from cards in an unsleeved deck of other Near Mint/Mint cards. Foils in this condition have little or no scuffing or clouding on the front and edges of the card.