Hourglass of the Lost
From Modern Horizons 3 Commander set
Hourglass of the Lost
Artifact
: Add . Put a time counter on this artifact.
, Remove X time counters from this artifact and exile it: Return each nonland permanent card with mana value X from your graveyard to the battlefield. Activate only as a sorcery.
Rulings
- If a card in your graveyard has in its mana cost, X is considered to be 0.