Star Statue

The Star Statue is a statue which can be found randomly throughout the world as part of a set of statues. It may be placed for decoration.

Upon being wired to a Switch/Pressure Plate/Lever, a Star will appear from it and may be consumed for 100 mana. The statue has a cooldown time of 10 seconds. The statue will not spawn a star if there are 10 or more stars anywhere in the world, 6 or more stars within 800 pixels (100 blocks), or 3 or more stars within 300 pixels (36 blocks).

Similar to the Heart Statue, the Star Statue is essentially only helpful when you are preparing for a fight in which you expect to use a massive amount of mana in a location you've had time to actually set up several mechanism items ahead of time. This is to say, it's almost solely useful in boss arenas or enemy-farming locations.