It's a fantasy role-playing game.

DM: You are Percival de Rolo, a human gunslinger . You are the member of the famous group of adventurers. Previously, Trinket races to Vax's side as Vex unleashes two more arrows at Lady Briarwood. Both strike true, momentarily dispelling her cloak's Mirror Image effect.
DM: Actually, ignore the last attack. Because technically, Lady Briarwood would have lost her concentration on the Haste spell she had on him from the damage she took earlier.
Player: Ignore the last attack?
DM: Ignore the last attack.
Player: So that would have been-- my first save is 13?
DM: 13? All right, that does succeed.
Player: And that's 22, yeah.
DM: So you resist the effect of the two strikes.
