Tainted Æther

Enchantment, 2BB (4)
Whenever a creature enters the battlefield, its controller sacrifices a creature or land.¹
Gix despised the sylvan morass. The gouge that the portal had torn in the forest was the only pleasing sight.
Illus. Thomas M. Baxa

Gatherer Card Rulings [Nov 2009]

• 10/4/2004: If the creature changes controllers before this ability resolves, its new controller has to sacrifice something.
• 10/4/2004: If more than one of these is on the battlefield, the controller sacrifices a creature for each one of these.
• 10/4/2004: If the controller has no other lands or creatures on the battlefield, they must sacrifice the creature that just entered the battlefield.
• 10/4/2004: Tainted AEther's controller is the one that controls its triggered ability, but the controller of the creature that entered the battlefield chooses what creature they sacrifice during resolution.

Format Legality	Legal in Vintage, Legacy, MTGO Classic Banned in Extended, Standard
Printings (2/12)	Seventh Edition (Rare) Urza's Saga (Rare)