Can't use skills with poison damage if no points

[TheWood]

Skills that deal poison damage don't work if you don't have class points targeted for that skill, maybe some % of your level.
If you only have 1 finesse and for example level 10+ then you wouldn't be able to use the venom snakes skill.

[TheWood]

Venom snakes are often used by low level players because they have high poison damage and do not require any runes in whip. Pretty good for killing enemies with a lot of defense when your normal damage is low. Players who are not whipmasters use this and easily level up on strong monsters.

[CrazyVanilla]

Or you just are forced to use the skills of your class and only your class, not determined by the weapon you are holding. That is a better solution.