Arcane tower

The Arcane Tower is a "magical defensive tower with the Reveal and Feedback abilities. Attacks land and air units."

Blood Elf Arcane Tower
Arcane Towers are a Blood Elf unit that are towers. They appeared in the Warcraft III Frozen Throne Human Campaign to aid Kael'thas. It is built at the worker.

Statistics from Warcraft III

 * 800 HP
 * 8-10 piercing ranged damage
 * 8 fortified armor (upgraded)
 * Feedback (destroys enemy mana damaging them)