Need help with playing against the AI!

why specifically Naadir? The undead are tanks, what should I do with them? Do you think having only 1 ranged unit – liches – is enough? Wouldn’t skeleton archers be more useful? There will be about 200-300 of them, and the effect will be greater.

Added 6 minutes later

Focus liches on archers; when they attack, cast plague. When the archers die, block the druids.

It seems like you consider archers who can take down all my liches with luck to be weak. He will have 100-200 archers. The Ossir character will cast something, and my only ranged unit will die.