Ephemeral Touch

Pick a Tzeentch unit from your army within 9"of
the Mutalith Vortex Beast; improve the AP of all
melee weapons wielded by that unit by 1 until
the end of turn (for example, a weapon with an
AP of 0 would have an AP of -1 instead).
If this model has 7 or fewer wounds remaining at the
start of your Shooting phase, the ranges of its MVPs
are doubled; however, it will suffer a mortal wound if
you roll a 1 when the model attempts to use a power.