You can react with certain abilities and actions if you have your Reaction available. You regain the ability to use your reaction at the start of your turn. Below is a list of standard reactions.
Reaction | Trigger | Effect |
Readied Action | Set a Trigger | You perform an Action during any turn as a reaction to a trigger, consuming both your action points and reaction. |
Attack of Opportunity | A target leaves your melee range | You expend a reaction and make an Attack at the target as they leave your melee range. |
Spellcast | Set per spell | You use a reaction spell. |