P.H.D. is a passive Treasure item.
It allows the player holding the item to either add or subtract 1 from any of their own non-attack dice rolls.
This means P.H.D. cannot directly help you in combat, and it also cannot affect other players' dice rolls.
- P.H.D. goes well with the Pills! Loot Cards.
- It is especially useful for monster events like Gold Chest.
- Certain trinkets can benefit from P.H.D. like Guppy's Hairball and Poker Chip.