80 Ability Power, 500 Health. UNIQUE Passive: Your spell damage will slow the target's movement speed by 35% for 1.5 seconds (15% for multi-target spells, damage over time spells and spells with a cooldown time below 3 seconds).
v1.0.0.63 - 2009-12-17
Rylai's Crystal Scepter slow duration increased to 2 seconds from 1.5 seconds.