Dice modification occurs during the Combat Phase of gameplay.
- Add: To add a die result, place an unused die displaying the result next to the rolled dice. A die added in this way is treated as a normal die for all purposes and can be modified and canceled.
- Change: To change a die result, rotate the die so that its faceup side displays the new result.
- Reroll: To reroll a die result, pick up the die and roll it again.
- Dice can be modified by multiple effects, but a die cannot be rerolled more than once.