An idea I considered for a new mage hero would be something of a semi-targeted skill, where it either hits X number of weakest health heroes (say the weakest two or three by HP values), or first hits the highest health hero with lots of damage, then the weakest 1-2 heroes with decreasing damage. This hero would hit more often than Smoulder since it wouldn't be complete AoE. This hero could potentially affect the Morale of the first hero it hits as well (reduction by 35-40 or so).