Debilitate is a Nightblade Class skill, found in the Siphoning Skill Line.
Base Skill: Cripple
|Sap an enemy's agility and wrack them with pain, dealing 4785 Magic Damage over 20 seconds and reducing their movement speed by 50% for 4 seconds. Each tick applies the Overcharged status effect, inflicting Minor Magickasteal for 4 seconds, causing you and your allies to restore 168 Magicka every 1 second when damaging the target.|
Debilitate is a morph of the Cripple base skill. The other morph is Crippling Grasp.