Help me understand devotion chance to hit

Grim Dawn Gameplay Discussion
1

Unlocked my first devotion ability (acid spray) and I’ve noticed it has two different chances to happen depending upon which skill I assign it to:

For a Curse of Frailty it has a 15% chance on attack.

For Dreeg’s Evil Eye it has a 63% chance on attack.

Why the difference?

Also does every tick of Dreeg’s evil eye’s poison have a chance to proc it or just the initial hit? If it hits multiple enemies (from Blood Burst explosion) do they all have individual rolls to proc Acid Spray?

2

It’s based on the cooldown of the assigned skill. I assume you have the Dreeg’s Evil Eye transmuter which gives the skill a cooldown. CoF has no CD at all.