The weakest castle in Heroes of Might and Magic IV!

Look.
Death can fully utilize its potential, for example, against Chaos and almost 100% against Nature.
Against Life, Death is effective by about 40%.
Here.
But, as I've repeated, this is said from the perspective of Life.
And so, it's optimal for Death to use this build against Life.
Skeletons (effective), Imps (effective (because they disrupt Angels by draining mana)), Cerberi (moderately effective), Souls (effective (they constantly age soldiers, and you need to periodically remove the aging, but the hero can be killed), Vampires (ineffective (many ranged units and Crusaders)), Mutation (moderately effective (by the way, I probably have a bug in my pirated version, but Mutation can be killed by poisoning, both with poisonous attacks and with magic)), Devils (moderately effective (you can kill the hero or attack the crossbowmen, but no more)), Skeletal Dragon (ineffective (no one will shoot at it; they will simply attack with Crusaders and Marauders)).
As you can see, Death's potential against Life is very low.