Modifiers

Game Mechanics: Dice Modifiers
Dice roll modifiers are applied to improve or decrease a player's chance of success when they are rolling for a character's action or reaction. They are extremely common. If a modifier would make a dice roll impossible to either succeed or fail, it should not be used. Instead, the GM should simply grant the player an automatic success or warn them that no success is possible, depending on the circumstances.

Here are ways that modifiers will typically be applied:

1. Increasing or Decreasing Target Number (TN)

2.Buffs or Debuffs applied to either a Player Character or their target.