Hex

Hex (or Sheep or Polymorph) is used to refer to a type of status effect that transforms the affected unit into a critter, silencing and disarming a target and reducing its movement speed to 100. Hexed units are also unable to perform actions that heroes can, such as using, picking up, or dropping items and gaining experience.

Hex shuts off all abilities on heroes except the following:
 * Upgrade-granted ones, like Marksmanship, Spell Shield, Dragon Blood
 * Triggered abilities like Counter Helix, Backtrack, Craggy Exterior and certain other passives
 * Unsilencable abilities like Reincarnation
 * Toggled abilities like Mana Shield, Rot, Pulse Nova, Agility Gain, although they couldn't be switched for the duration of Hex

Hex also disables True Sight granted by Gem of True Sight, Burn damage from Radiance, Evasion, and Damage Block.

Auras have a fade time and will vanish after 2-4 seconds if their carrier is hexed.

Hex will not affect the unit's magic resistance or armor nor dispel any buffs, thus certain abilities like Shapeshift or Surge would still grant affected unit maximum movement speed.

All current methods of applying the hex effect to a target will trigger, and be blocked by, Linken's Sphere and are unusable on a target with Magic immunity.

Sources of Hex

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