No More Monsters

At your upkeep, tap all non-token creatures you control and put a 2/2 black Monster creature token with haste on the battlefield. Sacrifice No More Monsters: Untap all creatures you control and sacrifice all creature tokens you control.
If a subject awakens from a state of REM sleep while within SCP-122's radius, they will display signs of insomnia, and will complain of unusual dreams.