Miasmic Mirage

Miasmic Mirage is a Hex spell with a range of 15"
that targets an enemy unit. Until your next Start
of Turn sub-phase, the target enemy unit suffers
a -2 modifier to its Movement characteristic (to a
minimum of 1) and cannot march or charge. If this
spell is cast, the effects of any other Hex previously
cast on the target unit immediately expire.