For ages I've avoided this item due to fearing what it could do, but i eventually bit the bullet.
It then proceeded to crash the game on the next floor after I stole a devil deal item with the credit card in a bottle. You might want to rework how that item works, besides, having to fight ♥♥♥♥♥ Phase 4 on the second floor or third floor of a run is way too unfair. It's unbalanced against you.