Tiger Heart is a passive feature that grants a Wildheart Barbarian a special version of Rage and another ability.
While Raging, you can use Tiger's Bloodlust, and your jump distance increases by 4.5 m / 15 ft.
Classes:
Raging, you can use 
Tiger's Bloodlust, and your jump distance increases by 
4.5 m / 15 ft.
