Guardian's Amulet 2049since 0.152.55 20 changes removed in 8.2.1
700g (700g base, 280g sell)
Active — UNIQUE Active - Ghost Ward: Consumes a charge to place an invisible ward that reveals the surrounding area for 3 minutes (maximum 2 wards placed from this item at once).(Unique Passives with the same name don't stack.)
Builds into: 
Ruby Sightstone
HealthConsumableActive
Click any two patches to compare; the current range is shaded.
− Restores 10 Mana every 5 seconds. If you can't gain mana, restores 3 Health instead.
+ Restores 10 Mana every 5 seconds. If you can't gain mana, restores 0.6 Health instead.
− Restores 10 Mana every 5 seconds. If you can't gain mana, restores 0.6 Health instead.
+ Restores 10 Mana every 5 seconds. If you can't gain mana, restores 3 Health instead.