Bond of Agony
Dissension — uncommon
Sorcery
Bond of Agony rulings:
2013-04-15: You must pay both X life and . For example, if you want each other player to lose 2 life when Bond of Agony resolves, you must pay and 2 life.
2006-05-01: You can’t choose an X that’s greater than your life total.
2006-05-01: You can choose an X that’s equal to your life total. If you do, you’ll pay that much life when the spell is cast and will lose the game before it resolves.