Seriously tho, regular fire would be comparable to mei's, except ya kno, fire. Instead of icicle shot, make it a flame burst like torb or roadhogs secondary fire. Instead of a self heal, make it a targeted probe that will stick to and follow and enemy while droping small flames on them. Instead of the ice wall, make a it a ring of fire (like lucios ring) except it stays up where you dropped it (the center is where you dropped it), and it deals damage to anyone in it or passing thru it. Then for the Ultimate, make it a quick flame tornado that will hurt everything in the zone (just like blizzard), and it wont stun, but it will slow movement slightly.