Nami Ability (LoL): Tidecaller's Blessing

Nami empowers an allied champion's next 3 attacks and abilities for 6 seconds, causing them to slow their targets by 15 / 20 / 25 / 30 / 35% (+5% per 100 ability power) for 1 second and deal an additional 20 / 35 / 50 / 65 / 80 (+20% of ability power) magic damage.