Land Equilibrium

Enchantment, 2UU (4)
If an opponent who controls at least as many lands as you do would put a land into play, that player instead puts that land into play then sacrifices a land.¹
Illus. Jesper Myrfors

Crystal Keep Rulings Summaries

• You sacrifice a land after you put one into play and not before. [D'Angelo 1995/01/18]
• This is a replacement effect (see Rule 419), so it is not possible to tap the land that just entered play for mana (as a mana source) before you sacrifice a land. [D'Angelo 2001/08/31]
• The effect is cumulative. If you have 2 of them, the other player must sacrifice two lands for each one put into play. [D'Angelo 1994/08/01]
• Extended tournaments (see Rule 803) have always banned this card.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/2)	Legends (Rare)