The Millennium Calendar (The Lost Caverns of Ixalan Prerelease)

Casting Cost

Type Legendary Artifact

Description
Whenever you untap one or more permanents during your untap step, put that many time counters on The Millennium Calendar.
, : Double the number of time counters on The Millennium Calendar.
When there are 1,000 or more time counters on The Millennium Calendar, sacrifice it and each opponent loses 1,000 life.

Rarity Mythic

Brand Magic: The Gathering