But your rating turns out to be not of the most useful, but of the strongest! Don't stray from the topic!

I didn't understand it at first either... It even seemed strange. But then we decided to calculate the usefulness of monsters in the final battle, and everything became clear. Because people clarified.
In general, no one forbids anyone here to calculate their own criterion of usefulness and express their opinion.

But he can resurrect, and this can play a key role in the battle.

Yes, exactly. Especially if you manage to resurrect someone with angels at the end of the battle (although I agree with BASON that there is often not enough time for this), and then the hero resurrects them too. Losses are immediately minimized.

And devils are useful because they produce ice demons... They definitely won't be a hindrance. True, you need a lot of devils to feel the help of the ice demons significantly. And if there are only 10 of them... It's not enough to freeze the enemy.