How to utilize Instant Mana Leech for Acolyte of Chayula

Acolyte of Chayula has a skill called Ravenous Doubts that gives instant Mana Leech. The problem is that all sources of Mana Leech I can find are physical attack damage which severely limits the skills that can be used to non-monk skills. Is there any way to leech mana from all attacks or elemental damage?

bit confused as the question, why wouldn't you be able to use monk skills?

the only monk skills that don't do physical damage are shattering palm, hand of chayula, and frozen locus

everything else varies from 20% (ice strike) to 100% (bell, flicker) physical unless you specifically build them not to be