Siren of the Silent Song | Magic: The Gathering
Formats Siren of the Silent Song is Legal in
Official Oracle Text for Siren of the Silent Song
Inspired — Whenever Siren of the Silent Song becomes untapped, each opponent discards a card, then puts the top card of his or her library into his or her graveyard.
Official Rulings for Siren of the Silent Song
2/1/2014 : If an inspired ability triggers during your untap step, the ability will be put on the stack at the beginning of your upkeep. If the ability creates one or more token creatures, those creatures won’t be able to attack that turn (unless they gain haste).
2/1/2014 : Inspired abilities don’t trigger when the creature enters the battlefield.
2/1/2014 : If the inspired ability includes an optional cost, you decide whether to pay that cost as the ability resolves. You can do this even if the creature leaves the battlefield in response to the ability.