| Color= Blue | Type= Instant | Cost= U | A(U)/B(U)/U(U)/R(U)/4(U) |
| Text (4th+errata): Cast ~this~ 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. [Oracle 2009/07/08] |