It's a fantasy role-playing game.

DM: You are Vex Vex'ahlia, a half-elf ranger . You are the member of the famous group of adventurers. Previously, The dominated guard, who had been pointing his crossbow at Scanlan, quickly turns and aims at Sir Kerrion. you'ahlia ducks her head into the room and shoots at Sir Kerrion from her Longbow of the Sky Sentinel.
DM: Correct. That was one of them. You fire it, it splits into three along the way, and you roll for each attack on each arrow.
Player: Oh, that one doesn't hit. Well, probably not. 13?
DM: No.
Player: 18?
DM: 18 unfortunately does not hit, either.
Player: Jeez Louise, what a waste of a storm arrow.
DM: And you still get a fourth attack with your second--
