Urza's Ruinous Blast (DOM)

Legendary Sorcery

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.)
Exile all nonland permanents that aren't legendary.

Centuries ago, one man's vengeance plunged the world into ice and darkness.
Noah Bradley
39/269
uuid: ae09affb-34a1-5759-b960-2deda05b540e

2018-04-27:
You can’t cast a legendary sorcery unless you control a legendary creature or a legendary planeswalker. Once you begin to cast a legendary sorcery, losing control of your legendary creatures and planeswalkers won’t affect that spell.
2018-04-27:
Other than the casting restriction, the legendary supertype on a sorcery carries no additional rules. You may cast any number of legendary sorceries in a turn, and your deck may contain any number of legendary cards (but no more than four of any with the same name).