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, The frost worm bites Keyleth, who casts Blight as payback and heals herself. Vax asks Pike for healing, then hits the visible worm.
DM: That ends its turn. Now having it appeared, as this round has happened, I would like both Grog and Percy to--
Player: I'm going to shoot the purple thing with a violent shot.
DM: How many points into it?
Player: I'm going to drop all three points into violent shot.
DM: Okay! That adds plus six to your misfire. So you have like a 46% chance of misfiring on this shot.
Player: If I roll a six. A six or lower. It--
DM: Well, it adds plus two to your misfire per point spent.
Player: Oh! Never mind then! Oh shit! Then never mind. Then I'm just going to take two points of violent shot. So that's--
DM: So that would bring it to a misfire of seven.
Player: Yeah.
DM: Okay! So take your shot.
