It is just like the Necromancer. However, it has 4 barrels instead of 2. Also, it only can bewitch Pentagons and Alpha Pentagons and only can have 10 drones.
As The Alpha Necromancer:
Avoid the Auto 7 and 8, as they can quickly dispatch most or all of your drones. If you see one, dodge their bullets and "spiral" into them. Most other tanks should not be a problem. The only exception is the Smasher, because of your low drone count.
Unless you are a class listed above, it is a bad idea to attack. Body is your best bet, so
Booster is good against it.