In the skill description for Crippling Wave - Rising Tide, it is stated that
Critical Hits generate an additional 5 Spirit.
Since Crippling Wave typically hits multiple enemies with each use, is the 5 additional spirit generated for a critical hit per enemy, or per use of Crippling Wave?
(the same question applies for Fists of Thunder - Quickening and Deadly Reach - Strike from Beyond, but I'm mainly interested in the rune with Crippling Wave, since it tends to hit many more enemies)