It's a fantasy role-playing game.

DM: You are Fjord, a half-orc warlock . You are the member of the famous group of adventurers. Previously,  Having learned all that they can about you's odd incident, the party embarks on their second day of travel.
DM: All right, so the spear attack, it's going to, as it climbs to the top and lunges out with its arm. Go ahead and make an attack roll for me.
Player: Oh, okay. Plus anything?
DM: It is plus five.
Player: That's a 20.
DM: Sorry, plus four.
Player: That's a 19.
DM: 19 definitely hits. Go ahead and roll 1d6 damage plus two. Two hands technically, so that would be 1d8. Sorry.
Player: Yeah, that's much better. Nine.
DM: Nine. Nein! It jams the spear with both hands into its friend and the gnoll yelps and grabs it and pulls it out and looks at it confused and angry. Trying to figure out what exactly happened. As it does so, it's going to attempt to shove it off the wall that just hit it. Make a roll for the athletics check of the other gnoll.
Player: Adding my modifier or its?
DM: Its modifier.
Player: 16 plus?
DM: 16 plus two. It beat it. It rolled a 17. After it gets stabbed and looks back at the gnoll that you took control and Sparta-kicks it off of the edge of the roof. It slides and tumbles down, landing onto the ground prone right next to Molly. It does suffer one point of falling damage. Molly, you watch as it tumbles and hits the dirt next to you and it's like (groans). You watch as this mystical crown of weird iron horns are floating above its head.
