Skeleton Statue

The Skeleton Statue will spawn a Skeleton when powered. The statue will not spawn a skeleton if there are 10 or more skeletons anywhere in the world, 6 or more skeletons within 800 pixels, or 3 or more skeletons within 300 pixels.

The Skeletons spawned from the statue will not drop coins, although they are still able to drop Hooks and Hearts that restore 20 life. Hooks can be obtained this way, but it is unlikely that one would not have a Grappling Hook by the time they had access to wires and power triggers (after rescuing the Mechanic in the Dungeon). It can be found in dungeons.

Tips

 * If you happen to find a Skeleton statue very early in the game, you can transform a randomly-generated trap and turn it into a very simple Hook farm. Remove the active blocks or dart trap, and put the skeleton statue in its place. Then encase the Statue in some blocks, and leave a 2 high, 1 wide opening in the wall. The spawned Skeletons cannot hurt you, but you can damage them. Rinse and repeat, and you will eventually get your first Hook.
 * Since patch 1.2.3, it is now the most profitable statue to mechanise with wires & timers/engines.