Greasy Deluge

The Butcher chews up a big mouthful of rancid fat
and gall-slime before spitting it onto the ground.
Enemy warriors find themselves trapped in a
foul-smelling deluge of grease, slipping and sliding as
they try to bring their weapons to bear.
Greasy Deluge has a casting value of 7.
If successfully cast, pick 1 enemy unit within 18"
of the caster that is visible
to them. -1 to hit rolls made by that unit the start
of your next hero phase.