Enchanted Realms Rulebook
Reactions
Once in each round a combatant is alloted a turn to take an action; however, there is another opportunity for that entity to have further impact on the combat. This is through a game mechanic called a reaction. A reaction is an instant response to a trigger of some sort. This trigger can occur on player’s turn or due to action of someone else. In terms of timing, unless stated differently in the description, immediately after the trigger condition happens. Should the reaction interrupt another creature's turn, then that creature can continue its turn right after the reaction is processed. Some reactions are basic ones which anyone can perform, while others require a skill (or possibly a magic spell) to be able to use. Reactions are not required to use, but they are limited to one use per creature per combat round. Just like actions, the reaction counter is reset at the start of the following round.
Examples:
• Dismount Unexpectedly: When a walking mount is incapacitated, the rider may use a reaction to land on his feet.
• Evade drive maneuver: A reaction can be used to avoid the effects of drive.
• Flee-attack: A melee combatant from an adjacent hex chooses to retreat, an attack as a reaction is permitted.
• Impalement: Reaction used against a charging opponent if using a reach weapon.
• Standing up: When knocked prone and having enough movement remaining for the round, standing back up can be performed as a reaction. The timing of standing up may be penalized depending on the cause.