What this is about is adding an enemy that might randomly spawn during a level. I have decided to call it: The Watcher.

This enemy is completely invincible. You can't kill it, or push it away with your shield. Your only choice is to RUN!

The Watcher is only able to spawn in regular levels set on elite or rarely advanced. (On elite, there's a Boss floors, treasure vaults, terminals, etc. are the only levels he can't spawn in. If he happens to spawn in your level, the music that plays is now gone, and it plays the long lost graveyard music, only in a weird warped version. The edges of your screen will fade to black, making vision hard to see. You also hear chains clattering in the distance. All you see of him are just red eyes with the snarby after-effect. When he gets close enough, you screen will randomly make a small burst every 5 seconds or so. If he happens to touch you, not with one of his attacks, your screen goes black, and your health drops to 1%.(It will always go to 1%, no matter what your health is. Only if you have 1% health before is when he downs you.) He then disappears. All effects are now gone, and the level is now normal. A way to despawn him temporarily is for all party members to activate a party button. This will make him go away temporarily. The effects are gone until he spawns back in. This makes it easier doing a mob room. (The rooms that spawn in waves of enemies) Using the elevator will despawn him.

His attacks include using a big scythe. His swing has a lot of AoE, in a big arc motion. It deals shadow damage, and has a chance to curse. He also has a chain attack. It does very minor normal damage, but it will latch to you, and start slowly pulling you towards him. If you are able to hit it with anything, it will break and you will be free. (This includes you hitting it, a teammate hitting it, or even a monster hitting it. Although the monster will still do damage to you if it's attack hits you) His last attack is to make your screen burst randomly, constantly for 10 seconds. It does no damage, but makes it hard to see.

That's about it. If you like the idea, or if you have some constructive criticism for it, feel free to say.