Exhaustion

Card Name

Exhaustion

Mana Cost

2

Type

Sorcery

Rarity

Uncommon

rules Text

Creatures and lands target opponent controls don't untap during his or her next untap step.

Legal Formats

Commander, Legacy, Modern, Vintage

Not Legal Formats

Alchemy, Brawl, Explorer, Historic, Pauper, Pioneer, Standard

Rulings

(10/4/2004)
The creatures and lands are only prevented from untapping during the targeted player's next untap step. They can still can untap during other player's untap steps.
(10/1/2009)
No creatures or lands controlled by the player will untap during their next untap step. This includes those which entered the battlefield after Exhaustion resolved.