This is probably my most hated card in the entire game. It gets more powerful as you add more investigators because you can set up a dreaded "draw an acolyte, draw an acolyte, draw ancient evils" chain that advances the agenda much faster than expected.
I think this card makes the game less fun. Drawing it has abruptly ended multiple scenarios for me. Being defeated from damage or horror or otherwise losing after drawing a token from the bag is much more fun than pulling a card that basically says "Game Over".