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Well, in principle, the main thing is to redraw the hero, because he's not a hero, but...
Added 4 minutes later
I came up with something for the mages:
Healer (level 3). Stats:
attack--------3
defense------3
damage---------2-4
shots----10
HP-----------15
speed-----4
initiative--11
Don't worry, he's not as dumb as he seems.
Ability - healing: fully heals a unit at any distance BEFORE the turn.
Added 3 minutes later
Improved: Battle Healer. Stats:
attack--------4
defense------5
damage---------2-5
shots----20
HP-----------22
speed-----4
initiative--13
Abilities - healing (that's obvious), healing explosion: fully heals all friendly units (this time, instead of the turn).