The damage dice used to make a damage roll are determined by the weapon, spell, or ability you’re using to make the attack. If the attack uses a weapon, you roll a number of your weapon’s damage dice equal to your Proficiency. You can find your weapon’s damage dice in the “Active Weapons” section of your character sheet. If the attack is coming from a spell on a domain card or class feature, the text tells you which damage dice you should roll.

Any time a move tells you to deal damage using your Proficiency, you roll a number of dice equal to your Proficiency. Any time it tells you to deal damage using your Spellcast trait, you roll a number of dice equal to your Spellcast trait.

As with action rolls, if you want to add a bonus to your damage roll, you must decide to do so before you roll.