Teleport Beacon

Description
Sentry places an invincible beacon that provides vision similar to an ally 'naut, including inside Hide Areas. Activating the skill a second time instantly teleports him back to the beacon, destroying it and dealing damage to nearby enemies. Taking any damage while a beacon is active briefly prevents Sentry from teleporting to it. The beacon will eventually expire if Sentry doesn't teleport to it in time and appears on the minimap as a dot.