From the latest PTR build:
I can imagine it now on fights like LK or Halion... Fireblast the boss with an Impact proc, getting 80k Ignites, Living Bomb and Pyroblast DoTs on ALL adds within 12 yards .... (valks/ghouls/spirits as well)Impact now has a 5/10% chance (up from 4/7%) to cause the next Fire Blast you cast to stun the target for 2 sec and spread any Fire damage over time effects to nearby enemy targets within 12 yards.
My head exploded.
/discuss