What Felis said.

The Bind effect already lands a LOT and lasts a good amount of time, especially when you invest in some Piety. Blizzard is when you know something is/will be coming for you and Blizzara is when there is stuff already on you or multiple enemies attacking the group on pull. You can run in and Blizzara, then run out. Needing to combo it for it to be any good like is required balance-wise for most combo moves would really hamper its utility as an emergency move.