[Trexmaster]

As it stands you either run away from the cast itself, or after you've already gotten slapped with it.

Otherwise the resulting combo (assuming your ice resist was 25% or lower) will likely just kill you outright.

This is mostly due to the stacking effects of both higher damage + being able to chain three attacks due to the weakness procs.

It's already something that you have to avoid or kill/disable the caster or else you'll likely eat shit yourself, at most I'd go with something like Fern suggested, docking the weakness percentage to compensate.