Tome of Legends 
Artifact
This artifact enters with a page counter on it.
Whenever your commander enters or attacks, put a page counter on this artifact.
, 
, Remove a page counter from this artifact: Draw a card.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL