+One

From publuisher blurb:

In the system, the player’s skills are linked to an attribute which determines how they can modify their results after rolling the dice. A roll can be manipulated in the following ways:

• Temporarily gain an untrained skill (dice are bought separately).
• Add a die to the roll (ex: roll 4 dice on a skill with 3 training).

• Add a pip to a die (ex: change a 4 to a 5).
• Reroll any number of dice. Keep the result (once per skill roll).