Average Dwarf

Resurrection spells are tough for Elves, considering that blue Druids convert it from Knowledge, which doesn't have a very high HP stack, and that white Rogues copy the resurrection spell onto themselves.

I've always preferred the 2nd upgrade for both Druids and Unicorns, but it's an interesting combination – it's worth trying. I also had an idea to try it with Orcs; their Bloodlust should help them withstand the initial onslaught and then start dealing damage.
And I liked the idea with Stormwind; it will be especially effective because they won't expect it and will likely not take it into account when setting up their defenses.