for that poison spike ability, the one on the scorpion in devotions. I have it attached to the poison bomb skill on my weapon. Is the poison bomb skill passive or do i have to do something to make it work?
Does the poison bomb skill say anything like ‘% chance on critical’ or ‘% chance on attack’? If there is no trigger condition listed, then you have to actively cast the ability.
how then do i cast it? theres no icon on my bar and i cant find one in the skills list.
Is this poison bomb from a completed Mutagenic Ichor?
Do you still have the weapon or offhand that you put it in equipped?
If you right click on an empty slot on your skill bar, you are saying the ability is not there?
Do you still meet all the requirements (spirit/physique/cunning) on your weapon?
Scorpion Sting has a 25% chance on attack to activate. That means (once you have attached it to Poison Bomb) you have a 25% chance to have Scorpion Sting activate when you hit an enemy with Poison Bomb. So yes, the Scorpion Sting part of the attack is passive, depending on your active use of Poison Bomb.
EDIT: Also, to use Poison Bomb, you have to set the skill on your skill bar like any other skill.
Keep in mind that Devotion activation chances vary depending on the cooldown of the ability you have it bound to, so that chance can vary.
Poison Bomb is an active skill. To cast it, you must first assign it to your skill bar. Just right click the empty skill bar slot where you want to bind it. You can also assign it to your left mouse/right mouse button clicks.