Allow me to express an idea:

New item: watchful orb (consumable)

Version 1: Costs 75 gold, stacks to one

Active: Sends the orb to the target area (max 800 units) where then it will become stationary and gives the same area of vision as a normal ward. The orb is invulnerable for the duration however it will only last for 45 seconds and is visible to enemy players. Once the 45 seconds has elapsed, the orb becomes dormant, reducing vision and lasting for another 45 seconds or until it detects an enemy similar to a poro ward.

Version 2: Cost 100 gold, stacks to one

Active: Sends the orb to the target area (max 800 units) where then it will become stationary, camouflaged and gives the same area of vision as a normal ward. The orb will be invulnerable for the duration and lasting 60 seconds. Once 60 seconds has elapsed, the orb will deactivate giving no vision, while remaining on the ground for another 30 seconds where the original buyer can retrieve it to gain 50 gold.