Grim Monolith

This artifact doesn't untap during your untap step.

: Add .

: Untap this artifact.

Untap this artifact during each other player's untap step.

: A player of your choice adds .

This artifact doesn't untap during your untap step.

At the beginning of your upkeep, you may pay . If you do, untap this artifact.

At the beginning of your draw step, if this artifact is tapped, it deals 1 damage to you.

: Add .

This creature doesn't untap during your untap step.

: Untap this creature. ( can be paid with one mana from a snow source.)

This creature doesn't untap during your untap step.

Whenever an artifact enters, you may untap this creature.

: Add .

, , Sacrifice this artifact: Draw a card.