Barrin's Codex
Artifact
At the beginning of your upkeep, you may put a page counter on this artifact.
, 
, Sacrifice this artifact: Draw X cards, where X is the number of page counters on this artifact.
DiTerlizzi
Urza's Saga (USG)
• #286Rulings
Adding a counter is optional. If you forget to add one during your upkeep, you cannot back up and add one later.
(wotc • 2004-10-04)
Rulings
Adding a counter is optional. If you forget to add one during your upkeep, you cannot back up and add one later.
(wotc • 2004-10-04)