Crippling Darkness (5e Spell)
From D&D Wiki
|Casting time:||1 action|
|Components:||V M (Bat fur and a pinch of dirt from a ghoul's lair)|
|Duration:||Concentration, up to 1 minute|
Magical darkness spreads from a point you choose within range to fill a 15-foot-radius sphere for the duration. The darkness spreads around corners. A creature with darkvision can’t see through this darkness, and nonmagical light can’t illuminate it.
When a creature ends its turn inside the spell's area, that creature must make a Constitution saving throw. The creature gains one level of exhaustion on a failed save. This level of exhaustion is removed if the creature ends its turn outside the spell's area. A creature that is affected by this exhaustion cannot gain further levels of exhaustion this way.
If any of this spell’s area overlaps with an area of light created by a spell of 3rd level or lower, the spell that created the light is dispelled.
At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, a creature can gain one additional level of exhaustion from this spell for each slot level above 3rd. A creature that ends its turn inside the spell's area must make additional Constitution saving throws and gains one level of exhaustion for each failure, up to the maximum number depending on the slot level used. If the creature ends its turn outside the spell's area, all their levels of exhaustion gained from this spell are removed.