It's a fantasy role-playing game.

DM: You are Caleb Widogast, a human wizard . You are the member of the famous group of adventurers. Previously, you grapples it with Earthen Grasp. It manages to clean the tar off the lens, and breaks you's concentration on the grapple by pinning him against the wall with a blade through the chest.
DM: They have disadvantage, because it is restrained. With disadvantage, it's going to be an 18 to hit for the first one.
Player: Shield.
DM: All right.
Player: So it misses.
DM: All righty. Second one, 16 and 18. 16 plus eight; it's going to be 24.
Player: Oh, that will hit. Those will hit.
DM: The first one, the shield (clang). It ricochets off and floats off in the background spinning. The second one, however, pierces through the shield and hits you in the chest.
Player: That's not going to be good.
DM: That's going to be 17 points of piercing damage.
Player: Good, good, good.
DM: And you are pinned to the wall. It actually pierced through your chest and is now holding you into the stone. Your movement is zero, and you are considered restrained against the wall.
Player: I also have to make a concentration check.
DM: You do. So go ahead and make a constitution check. With the damage taken, it has to be at least a ten or higher.
Player: Hold on. I rolled a three.
DM: No, and with that, the paw is broken.
