Reactions are actions you can take on any turn, including turns that are not yours.
Every turn you have 1 Reaction to use.
When a trigger occurs for a Reaction you know,
- And you meet any pre-requisites for that reaction,
- And the Tempo of the current turn is equal or greater than the Tempo of the reaction,
- And you have not used your reaction this turn,
You may expend your reaction to take the action of that reaction.
Each Reaction (unless stated otherwise) can only be used once per round.
If a Reaction can be used multiple times per round, the same Reaction cannot be triggered by the exact same trigger multiple times.
Reactions ignore the Unique Action Restriction.