Leash

Leash is a status effect that prevents affected units from casting some mobility spells, sharing the same list as root.

Mechanics
Leash does not disable a unit in any way. It merely disables casting several mobility spells, sharing interactions with the root mechanic. Several blink, pseudo-blink and teleport spells are disabled while leashed, to prevent an easy escape. However, although it prevents casting those spells, it does not cancel them when getting rooted while the spell is already cast. A list of disabled spells can be found below.

Leashing abilities
The following abilities leash enemy units:

Disabled by leashes
The following abilities are disabled by leash: