Æther Barrier

Enchantment, 2U (3)
Whenever a player casts a creature spell, that player sacrifices a permanent unless he or she pays {1}.¹
"Creatures fade in and out of existence. It's an unfortunate side effect. The losses are tolerable." -Belbe
Illus. David Martin

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/6)	Nemesis (Rare)