A witch on top of tower summons a skeleton every 10 seconds, upgrading will increase health and spawn rate.
Health is low, between mortar and air defense.
Optional feature:
At the same time, the witch tower allows you to test your defenses, summoning enemy troops and spells to attack your village. It'll be just like an attack but only on your own village. You can summon any troops as long as total troop space does not exceed your army capacity. Troops and spells dropped will cost a quarter of the original cost to train.
Not only has it been suggested way too many times I just don't like it. It's like a cc that always uses the same troop... I don't know it's just not right.