
Whenever you untap one or more permanents during your untap step, put that many time counters on The Millennium Calendar.
{2}, {T}: 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.
The Millennium Calendar has 4 printings, first in The Lost Caverns of Ixalan (2023). EDHREC ranks it #4,279 among Commander cards. It appears most in Kilo, Apogee Mind decks (2,833 on EDHREC). It has 2 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.