Polymorph Tower

Summary
Size 2x2

The sorcerers on these polymorph towers can turn enemy dragons into harmless flying sheep.
 * Once a dragon comes into range of the tower, it will get polymorphed, turning it into a sheep with wings. While polymorphed, the dragon can still fly around, but cannot attack.
 * If only dragons that are polymorphed are within the range of the tower, the tower does not re-polymorph those dragons. It only fires at dragons who have not been polymorphed.