Collective Restraint

Enchantment, 3U (4)
Creatures can't attack you unless their controller pays {X} for each creature he or she controls that's attacking you, where X is the number of basic land types among lands you control.¹
Illus. Alan Rabinowitz

Crystal Keep Rulings Summaries

• The cost is paid as attackers are declared. [D'Angelo 2007/02/04]

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