Hiruma's Last Breath

Only a Crab Clan Shugenja can attach this Spell.
Limited: Bow this Shugenja and destroy this Spell to have one of your units begin an attack against another player's unit containing a Shadowlands card. No other units can be assigned or move to the battle, and the battle cannot destroy a Province. The units cannot move to other Provinces from the battle. This does not replace your Attack Phase.