Discussion of third-tier monsters.

I'm not saying the monks will hit the mage, because you can still hit him with your angels, ballistas (if there are any), or crossbowmen.
It's unlikely you'll have both crusaders and monks at once... and angels can be killed by squires or spearmen. And it's unlikely the angels will be able to fly straight to the monks...

:D :D

Only a suicide would put a mage in the front rows just to get shot. The mage will stand so far back that an angel won't reach the hero immediately. It will take you a long time to kill angels with squires and spearmen. And I will have only crusaders, without monks (though if I find a monk hatchery, I wouldn't refuse them). And monks won't do much damage to angels in one shot.