Raid is an evergreen keyword mechanic found on cards from all Houses, but also occurs on neutral cards. Raid reads, “Raid (If this deals lethal damage to an enemy Follower during your turn, it deals any remaining damage to the next Character in that party.)” Raid is a mechanic that triggers after your the card deals lethal damage to a character. Raid is limited to only triggering on the your turn. If the card deals damage on another players turn, Raid will not trigger.
Example; if I initiated a duel between Lone Mercenary and an opponent’s champion who has only 2 Might, Raid would be triggered as a result of the lethal combat damage. The first 2 damage would be applied to the enemy character, defeating it, and the remaining damage is applied to the next follower in the party. If the next follower only had 1 Might, that character would only receive as much damage as necessary to be defeated, and the remaining damage would spill on to the next follower in the party. If there are no other followers in the party, then the remaining damage is spilled on to the Persona, reducing its prestige count. If my opponent then initiates a duel during their next turn, the Mercenary’s excess damage would not trigger Raid.