Passive: True Sight
Gives the ability to see invisible units and wards.
Illusions that possess Gem of True Sight will also provide True Sight around them.
The Gem of True Sight is both the most reliable yet risky of the True Sight options. It provides a constant aura of True Sight around the holder which can reveal any invisible enemies and wards. However, when the holder is killed, the item is dropped on the ground. The Gem cannot be destroyed and will persist until it is picked up by either team. Because of the potential investment lost, coupled with a stock cooldown of 10 minutes in the store, having only one in stock, and backfiring on any invisibility-based heroes on your team, purchasing this item is a decision that must be carefully considered.