Blazing Wheel

The Blazing Wheel is an indestructible enemy found in the Dungeon that looks like a saw on fire. The Blazing Wheel glides along the walls and floors of the dungeon. They produce light and move very quickly. This, along with Spike Ball, are the only two enemies that don't take damage. They spawn and despawn off-screen like any other enemy.

Tips

 * The Blazing Wheel will go through open doors, but not through closed doors. This can be used to trap them.
 * In addition to doors, placed blocks can be used to alter a Blazing Wheel's path. It can be trapped and safely slain with a placed Lava Bucket, although this yields no reward.
 * When you remove all of the blocks the Blazing Wheel is spinning on, it will fly towards the nearest wall.

Trivia
The Blazing Wheel bears a resemblance to Rinkas from the Metroid series of games. It might also be a reference to SMBX, one of Redigit's previous games.

History
Blazing Wheel Огненное колесо