Every spell Rumble casts gives him Heat. When he reaches 50% Heat he reaches Danger Zone, granting all his basic abilities bonus effects. When he reaches 100% Heat, he starts Overheating, gaining bonus Attack Speed and granting his basic attacks bonus damage, but making him unable to cast spells for a few seconds.

Rumble ignites his flamethrower, dealing plus % max Health magic damage over seconds, reduced to % against minions.

Danger Zone: Damage is increased to plus max Health.

Percent damage is limited to damage on Monsters.

Rumble tosses up a barrier, gaining Shield for seconds and % Move Speed for second.

Danger Zone: The barrier grants Shield and Move Speed instead.

Rumble launches an electrified harpoon, dealing magic damage, Slowing by % for seconds, and reducing the enemy's Magic Resist by % for seconds.

Hitting an enemy who's already Slowed by this Ability increases the Slow to % and reduces the enemy's Magic Resist by %

Danger Zone: The harpoon deals magic damage instead and the Slow and reduced Magic Resist are increased by 50%.

Rumble launches a line of rockets, creating a burning trail that lasts seconds, Slowing by % and dealing magic damage per second.

Rumble can control the direction of the trail by clicking and dragging while casting this Ability.