|The Guy With A Face|
An attack of opportunity is a single melee attack, and most characters can only make one per round. You don't have to make an attack of opportunity if you don't want to. You make your attack of opportunity at your normal attack bonus, even if you've already attacked in the round.
Its an attack, not a standard action. You can't vital strike on an attack of opportunity.
|James Risner Owner - D20 Hobbies, Representative - D20 Hobbies|