Yuumi fires a missile that deals 40 / 65 / 90 / 115 / 140 / 165 (+45% of ability power) magic damage to the first enemy hit. If the missile is in flight for 1 second, it instead deals 60 / 105 / 150 / 195 / 240 / 285 (+60% of ability power) magic damage and applies a 40 / 48 / 56 / 64 / 72 / 80% slow to enemies which decays over 1.25 / 1.35 / 1.45 / 1.55 / 1.65 / 1.75 seconds.

If Yuumi is Attached, she fires the missile from her ally's position and can direct the flight of the missile for up to 3 seconds.