Rengar Ability (LoL): Unseen Predator

While in brush, basic attacking causes Rengar to leap towards his target. Leaping to enter combat generates 1 Ferocity. At 4 Ferocity his next ability is empowered. Casting an empowered ability grants 30 / 40 / 50% (at levels 1 / 7 / 13) for 1.5 seconds. Whenever a unique champion is killed within 1.5 seconds of taking damage from him, Rengar's attack damage is permanently increased:

1 trophy: 1 + 1% attack damage
2 trophies: 3 + 3% attack damage
3 trophies: 7 + 7% attack damage
4 trophies: 13 + 13% attack damage
5 trophies: 20 + 20% attack damage