Rumble Ability (LoL): Flamespitter

Rumble begins torching the area in front of him with his flamethrower, dealing 11.25 / 15 / 18.75 / 22.5 / 26.25 (+9.16% of ability power) magic damage to all units in a cone in front of him every quarter second for 3 seconds, up to a total of 125 / 140 / 155 / 170 / 185 (+110% of ability power) (+6 / 7 / 8 / 9 / 10% of the target's maximum health) magic damage over the entire duration. Flamespitter deals 55 / 60 / 65 / 70 / 75% damage to minions. Rumble can move, attack and use other abilities while the flamethrower is on.

While in the "Danger Zone", this spell deals 50% additional damage.