The Sacrifice

When casting a non-Bound Spell, immediately
after the casting roll, but before any Dispelling
Attempt, the Active Player may choose a friendly
unengaged unit within 24'' or the Caster's unit.
A unit may only be chosen once per phase. The
chosen unit suffers 1 wound. Any Health Point
losses that would remove the last model of the
chosen unit as a casualty is discarded. These
Health Point losses never cause Panic Tests. The
Sacrifice activates the amplified ({r}) version of a
spell.