The Warlock's invocation Devil's sight allows him to see through all natural and magical darkness. He can take it at 1st level, and use it continuosly. Combine this with a Darkness spell (or better yet, Darkness invocation for unlimited use), some levels in fighter and you have a nice Sphere of Annihilation-look alike. Simply roll over the enemies with your Darkness spehere, and they will leave it in tiny bits. Enemies get disoriented within the sphere and attack an empty space, their allies, or simply suffer the 50% miss chance. They can only use area-attack spells. While the PC's merrily hack them into pieces or nuke them with spells and Eldritch Blasts from within their protection. Soon every PC takes a level in Warlock, and suddenly the party calls itself "The Blackballs".
It seems that there are but a few way to counter this cheesy tactic, like monsters with scent and blindsight. But I don't really want to center my campaign around girallons and dragons. Daylight and Dispel Magic would work, but there aren't always enemy spellcasters around, and even then they wouldn't prepare a lot Daylights. And when dispelled the party can simply put up another Darkness.
Any other groups with the same problem? Is there any way to counter this abusive combo? Tactics the enemies could use to even things out, without relying to "every enemy spellcaster has now a daylight spell prepared" thing? Or should I simply disallow this?
It seems that there are but a few way to counter this cheesy tactic, like monsters with scent and blindsight. But I don't really want to center my campaign around girallons and dragons. Daylight and Dispel Magic would work, but there aren't always enemy spellcasters around, and even then they wouldn't prepare a lot Daylights. And when dispelled the party can simply put up another Darkness.
Any other groups with the same problem? Is there any way to counter this abusive combo? Tactics the enemies could use to even things out, without relying to "every enemy spellcaster has now a daylight spell prepared" thing? Or should I simply disallow this?