At the moment I am working on the blob unit. Anybody remember gooey blob from Chaos - The Battle of Wizards?
This video shows a battle between various WarMage units.
Dwarf < Blob < Sorcerer < Archer < Dwarf
That is a full circle. There is no best unit in this game, all are good in different situations.
Note that the blob is under development so this is not the final version.