name: Siren's Call
originalText: All of target opponent's creatures that can attack must do so. At end of turn, destroy any non-wall creatures that did not attack. Play only during opponent's turn, before opponent's attack. Siren's Call does not affect creatures brought under opponent's control this turn.
printings: 2ED, 30A, 3ED, 4BB, 4ED, CED, CEI, FBB, LEA, LEB, SUM
text: Cast this spell only during an opponent's turn, before attackers are declared.
  Creatures the active player controls attack this turn if able.
  At the beginning of the next end step, destroy all non-Wall creatures that player controls that didn't attack this turn. Ignore this effect for each creature the player didn't control continuously since the beginning of the turn.
type: Instant