I've seen the AI do this many times, so I tried and it's a pretty killer strategy. It works for the AI a lot better than human players, but it can still work for people.
This is a non 11 book Death strategy that involves going after some specific Fantastic Units early with Ghouls and Black Sleep. Basically, early in the game you want to try and get some next tier fantastic units that you can use the quickly attack enemy wizard capitals. The two best units to go for are Fire Giants and Basilisks. These two units only have 7 Resistance, which means that Black Sleep has a 50% chance to work on them. If you can Black Sleep one of these, then get them with Ghouls and they will become an undead minion in your army. If you can get one of these then you should be able to quickly tear through enemy wizards. A single Basilisk can easily take full stacks of early units, so if you can get one early enough it will be easy to take out an enemy wizard or two with a single unit.
You do have to pay increased upkeep on undead fantastic units, so don't go for too many, just a few powerful ones.
The best approach for this is to take Conjurer + Archmage with 9 Death books. This will let you summon an army of Ghouls and be able to cast multiple Black Sleeps early on. Try to take a few nodes early, to support the mana. Phantom Warrior nodes are the best targets. High Elves or Halflings are the best races for it.
This is a non 11 book Death strategy that involves going after some specific Fantastic Units early with Ghouls and Black Sleep. Basically, early in the game you want to try and get some next tier fantastic units that you can use the quickly attack enemy wizard capitals. The two best units to go for are Fire Giants and Basilisks. These two units only have 7 Resistance, which means that Black Sleep has a 50% chance to work on them. If you can Black Sleep one of these, then get them with Ghouls and they will become an undead minion in your army. If you can get one of these then you should be able to quickly tear through enemy wizards. A single Basilisk can easily take full stacks of early units, so if you can get one early enough it will be easy to take out an enemy wizard or two with a single unit.
You do have to pay increased upkeep on undead fantastic units, so don't go for too many, just a few powerful ones.
The best approach for this is to take Conjurer + Archmage with 9 Death books. This will let you summon an army of Ghouls and be able to cast multiple Black Sleeps early on. Try to take a few nodes early, to support the mana. Phantom Warrior nodes are the best targets. High Elves or Halflings are the best races for it.