There seems to be a cut off sentence on page 149. The Arcane Leech Tier 4 ability Parasite includes the text "Whenever you deal damage to an Arcane." This doesn't seem to be connected to the rest of the ability, although I may be missing something.

Hello Qazgir! 
Thank you so much for pointing this out! 
I've checked and it's definitely an editing error. I'm making ammendments to the next version of the doc to resolve this.
For the time being, the text is meant to read:

"Additionally, whenever you deal damage to an Arcane caster, gain 1 Leech."