Originally Posted by
Nathyiel
-- Fire --
2-piece : each Pyro! increase Haste by 750 for 4s, stack 5 times (max : 3750 hastes) & ~1.76% haste per stack (max : ~8.82%).
4-piece : each Fireball and Pyro! have 10% chance to suppress IB cooldown for 6s.
use : the 2-piece bonus increase the haste for Pyro DoT's. the 4-piece give the possibility to chain cast IB for procing HS. When T16 proc, cast IB 2 time than pyro. If Pyro crit, cast another pyro. If not, cast IB 2 times, then another Pyro. Use Combustion, if possible to build 5 stacks. be sure to refresh the bomb before for the haste buff.
Why it's good : haste increase the DPS of Pyro's DOT and Combustion if used within the buff duration. The 2p give a better pyro's DOT and a longer Combustion. The 4p give a ways to chain cast Pyro for increasing the number of stack and Ignite's damage.