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Razaz claims to be the strongest academic. Easy start due to gremlins repairing golems + early defense + super golems in the final stage.
On a large map with a long game, this hero will clearly be better than Hafiz (Hafiz will be let down by the machines, the presence of which is no longer crucial, and the fact that gremlins are still a first-level unit, and specializing in them is weaker than specializing in golems).
Razaz, in my opinion, is much better than Nura, as I don't understand the usefulness of her specialization at all (I'm referring to long duels when mages have 300 or more mana).
Ora is a rather debatable option, as there are opinions that she doesn't cast spells much more often than another academic with spellcasting.
But this is definitely a strong option.