6% reduced Damage taken if you've Taunted an Enemy Recently
Regenerate 2% of Life per second if you've Taunted an Enemy Recently
Enemies Taunted by you deal 10% less Damage with Hits and
Ailments against other targets 
Conqueror is a notable Ascendancy passive skill for the Champion that causes hits to apply taunt. It also grants damage reduction and life regeneration if you've taunted an enemy recently and increases the reduced damage against targets other than yourself from enemies taunted by you.