This is an attack that happens outside the normal initiative cycle, but it still counts against the character’s available actions for the round. If the character is only able to make a single attack each round, making an Opportunity Attack will count as his attack for the round. If the character has multiple attacks (high skill, multiple weapons, etc.) each round, he may use any number of his attacks for the OA. If the character doesn’t use all of his attacks for the OA, then he makes the rest of his attacks normally according to normal initiative procedures. Opportunity Attacks are triggered by a potential foe entering or crossing a character’s Control Zone without the intention of attacking the character.