Dark Elves vs. Dwarves

Dwarves don't have particularly strong archers, so there's no need to block them with agile units, and assassins can easily harass all enemies, making the battle easier and reducing losses. What do you have against death magic? Are you against vampirism, slowing, or weakening? I use them often. The fact that there are no death magic spells in the guild is a drawback, but who says you can't use dragon lairs or mage treasuries?