Sorcery, 2BB (4) Sacrifice a nontoken permanent. If you do, target opponent loses 2 life unless he or she sacrifices a permanent or discards a card. You may repeat this process any number of times.1
Illus. Christopher Rush
You sacrifice during resolution, not during announcement. [D'Angelo 1999/07/10]
You choose the target opponent on announcement. [D'Angelo 1999/07/10]
If you choose to repeat the process, you repeat the effect but do not get to pick a different target opponent. [D'Angelo 1999/07/10]
After each time the effect finishes, you get the chance to use it again. All of these uses are done during the single spell resolution. [Duelist Magazine #17, Page 28]
If your opponent sacrifices a permanent with one of your local enchantments on it, the enchantment is not put into the graveyard until after you get a chance to repeat the use of this ability, so you can sacrifice the enchantment in response. [DeLaney 1999/09/04]
Visions
(Rare)