2 piecesThe duration of your additional Ignite status is increased by 30%.
4 piecesThere is a 15% chance of attaching an Ignite status to an enemy when dealing damage with Primary Attacks or Skills, dealing (72 % + 36) damage over 3 seconds, up to a maximum of 3.
6 piecesWhen you apply Ignite to an enemy, you immediately gain 12 sec of Explosive Fire (cooldown 40 sec), during which attacks that hit an enemy with 3 Ignites immediately explode for (50 % + 25) damage to nearby enemies (cooldown 0.5 sec).