Thorn Rune is a wasted potencial and sometimes doesn't work

Thorn Rune it’s very cool on theory but I am in Marin Forest and sometimes it doesn’t work at all. When it works is so barely noticiable that does not work the risk of channeling + recieveing a hit. It should be working really fine with shield, but neh.

It should be something like: it deflects damage propocional to the inflicted damage, so big hits should return 30% or more. Or deflects more damage related to your low health, so less health should deflect 80% of damage.

Just some ideas.