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The druids' initiative of 10 versus 8 hydras. 6 stacks of one druid each will kill 6 hydras in one turn, and they won't be able to do anything.
And will our hero be sleeping at this time?
He acts on the first turn, just like everyone else. Sorceress only works after you start casting spells.
And another example. The Elves have a hero specializing in attack value. Have you seen him in action at level 10? The questions answer themselves. He can only be killed by a Sufi from the Academy.
A counter-question: have you seen Reyelag? The one who specializes in lowering initiative.