Guinsoo's Rageblade

+30 Attack Damage
+40 Ability Power

Passive: Your basic attacks or spellcasts grant you 4% Attack Speed and 4 Ability Power for 8 seconds. This bonus stacks up to 8 times.
UNIQUE Passive: Falling below 50% health grants you 20% Attack Speed, 10% Life Steal and 10% Spell Vamp until you exit combat - 30 second cooldown.