Ward Undead is currently 5 mana for ~70 damage. Is that on purpose?
According to Lucy there was a change to that spell in 2005. Here it has both the low mana but high damage advantage.
2005-04-12 13:05 Changed Mana cost from 30 to 5
2005-04-12 13:05 Changed Slot 1 from "Decrease Hitpoints by 35 (L5) to 41 (L11)" to "Decrease Hitpoints by 9 (L5) to 12 (L10)"