More-more-more Warp Power

At great risk, the engineer channels raw warp
lightning power to nearby allies and himself.
Pick 1 friendly CLANS SKRYRE unit wholly
within 12" of the caster and visible to them. You
can re-roll hit and wound rolls for that unit until
your next hero phase. However, at the end of
your next hero phase, that unit suffers D3
mortal wounds.