Seems fine to me.
Depends who's using it.
On my templar for instance it procs from a lot.
Entropy, dawnbreaker, ice comet, Proxy det, Radiant oppression, jabs, tripling charge and Aurora javelin (all aedric spear skills seems to - I'm guessing it's the burning light passive).
So pretty much everything I use has a chance of proccing it. My gap closer (toppling charge), cc (javelin), spammable dps (jabs), extra dps (det), execute (Radiant), buff (entropy) and ults (dawnbreaker and ice comet) all proc it. Considering each jab can proc it, it has a lot of triggers. So 6% of each of them amounts to quite a lot of chances.