my choice is Grok for large maps and Nibros for small ones... although Nibros can also be used on large maps... even though his skills won't improve much in the future... building troops is still a very important factor (I once fought against him... the computer arranged my troops so badly:( )... in general, this hero is worth it.

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and regarding the Delegate skill, it has been noticeably reduced, and now I rarely choose it.

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in general, I think the ideal balance of skills for an Inferno hero is when not only the basic skills are upgraded... you need at least Dark Magic. and in general, I try to increase Spell Power as much as possible... Knowledge isn't very useful for him, since he has the ability to consume souls for mana + Imps - this is hell for mages and paradise for the Demon Lord... and with the right setup, the damage from the Hellfire skill will be impressive.