DotA True Sight

Heroes with invisibility
Sentinel
1)Bounty Hunter
2)Stealth Assassin
3)Treant when he uses the invisibility and is near trees
4)Templar assassin remains staionary
5)Priestess of the moon
6)Pandaren brewmaster's Primal split where the Storm Entity has windwalk
Scourge
7)Bone Clinks
8)Broodmother when in her web
9)Nerubian Weaver
10)Nerubian Assassin
11)SandKing's Sandstorm

Item which gives invisibility
Lothar Edge

Skills which grant enemy hero sight
These skills "mark" an enemy unit for a period of time.

* Slithereen Guard's Amplify damage
* Dwarven Sniper's Assassinate
* Spiritbreaker's Charge of Darkness
* Alchemist's Unstable Concoction
* Bounty Hunter's Track
* Spectre's Haunt
* Lord of Olympia's Thundergod's Wrath
* Bloodseeker's Strygwyr's Thirst
* Treant Protector's Eyes in the Forest

Items which grant truesight
Sentry Ward: 200/ 200. (700/ 700 True Sight range)
Gem of True Sight give the wearer vision of nearby invisible units.