I'm going for the fire trap starter posted above as well, I've never played around with traps so it will be something different at least.
The base build looks pretty solid and easy to set up, I've always liked ignite builds as well as they come online very early and make leveling a breeze.
I actually took the Herald of Thunder character I'd leveled last league, swapped out some of the ascendancy nodes for shaper of flames, stuck Fire trap and Frost blink into 3 link each, added Herald of Ash instead of Thunder, then a Berek's respite ring and found it surprisingly effective to say none of the passive tree wasn't even set up for fire damage.
It was basically just Frost blink in, everything nearby explodes, enemies on the edge get ignited & shocked then explode a moment later causing the chain to go on. Might be something for me to experiment with later in the league as a sort of speed clearing Frostblink character.