Power of Hysh

Power of Hysh has a casting value of 6.
If successfully cast, until your next hero phase, the Sunmetal Weapons ability for
the caster and/or the unit they are part of causes mortal wounds to be inflicted on an unmodified hit roll of 5+ instead of 6.
Any number of Lumineth realm-lords wizards can attempt to cast Power of Hysh
in the same hero phase.