Timesifter

Mana cost: {5}
Type: Artifact
Set: Mirrodin #262 (rare)
Price: $8.49 USD

At the beginning of each upkeep, each player exiles the top card of their library. The player who exiled the card with the greatest mana value takes an extra turn after this one. If two or more players' cards are tied for greatest, the tied players repeat this process until the tie is broken.

Timesifter has 1 printing, first in Mirrodin (2003). EDHREC ranks it #13,266 among Commander cards. It appears most in Ian Malcolm, Chaotician decks (359 on EDHREC). It has 8 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: legal
pioneer: not legal
standard: not legal
brawl: not legal

Commanders that run Timesifter most

Deck counts from EDHREC.

Often played with Timesifter

Cards that show up in the same decks on EDHREC.

Rulings

2004-12-01: Remember which player would have taken the next turn if Timesifter's ability hadn't triggered the first time. After Timesifter leaves the battlefield and all extra turns have been taken, that player takes the next turn.
2004-12-01: If two or more Timesifters are on the battlefield, keep a careful record of which players get which extra turns. With two Timesifters on the battlefield, two extra turns are created for each turn taken.
2004-12-01: A land card has a mana value of 0.
2004-12-01: Each player must exile the top card of their library at the start of each upkeep step.
2004-12-01: If multiple extra turns are created in a game, the most recently created extra turn is taken first.
2004-12-01: Each time there's a tie for the highest cost, only the players involved in the tie continue.
2004-12-01: If a player fails to exile a card, they can't take the extra turn.
2006-05-01: In Two-Headed Giant, triggers only once per upkeep, not once for each player.

Printings

Mirrodin #262