Exalted Dragon

{4}{W}{W} · Creature — Dragon

Flying This creature can't attack unless you sacrifice a land. (This cost is paid as attackers are declared.)

Motor: se resuelve a mano

Rulings (1)

You have to sacrifice a land at the time you declare this creature as an attacker if you want it to attack. This is additive with any other attack costs.
Wizards of the Coast · 2004-10-04