Stasis Trap Ward (Warcraft III)

Stasis Trap Ward is an invisible ward that can stun units around it. The trap activates when an enemy ground unit approaches. The stun lasts for 6 seconds for normal units, and 2.5 seconds for Heroes. Once the trap activates its stun effect, it dies.

This unit is summoned by Troll Witch Doctor's Stasis Trap Ward spell.