It's a very fun spell, always a surprse what you're going to get
Sadly, it doesnt work on any monster skills, tried it on Glint but to no avail.
I was very curious how crystal hybernation would work on me.
(Watrels Worry is magnificent for killing Glint btw)
As stated, in PvP it's also rather useful. You can disrupt skill combos and steal the monks spam skill.