Master Warcraft

Cast this spell only before attackers are declared.
You choose which creatures attack this turn.
You choose which creatures block this turn and how those creatures block.

Commander Legends

GRN Guild Kit

Commander Anthology

Cast Master Warcraft only before attackers are declared.
You choose which creatures attack this turn.
You choose which creatures block this turn and how those creatures block.

Commander 2011

Cast Master Warcraft only before attackers are declared.
You choose which creatures attack this turn. You choose how each creature blocks this turn.

Ravnica: City of Guilds

({GU} can be paid with either {R} or {W}.)
Play Master Warcraft only before attackers are declared.
You choose which creatures attack this turn. You choose how each creature blocks this turn.

You choose attackers and make blocking assignments regardless of whether it's your turn and regardless of whether the creatures are attacking you. Your choices must be legal within the normal rules for attacking and blocking.

You can decide that a creature won't block.

If the defending player controls a planeswalker, the person who cast Master Warcraft first chooses the complete group of creatures that are going to attack. Then, for each of those creatures, the active player chooses who or what it's going to attack.

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.