Flamewalking

Description
The netherfires follow you wherever you go, silently observing your combat prowess from the void. Every so often, when your swings excite them, they mark the ground you tread with flaming footprints.

Effects
(X percent) chance on hit: Flamewalk for (Y) seconds

The numerical effects are likely tied to items over individual skill level. Need confirmation -- McBroGuy

Note that if your item gives 10% proc chance a skill level keeps increasing it 10% so you can be at or over 100% proc chance at level 10.