Siren's Call
Unlimited Edition — uncommon
Instant
Siren's Call rulings:
2013-09-20: If a turn has multiple combat phases, this spell can only be cast before the beginning of the Declare Attackers Step of the first combat phase in that turn.
2009-02-01: This will destroy creatures that weren’t able to attack because they had been previously tapped.
2004-10-04: It will require creatures with Haste to attack since they are able, but it won’t destroy them if they don’t for some reason.
2004-10-04: The creature is destroyed if it does not attack because it simply can’t do so legally.