It's a fantasy role-playing game.

DM: You are Taryon Darrington, a human artificer . You are the member of the famous group of adventurers. Previously, Above that, x bars against the wall where, in the center, you saw a gold inlaid seal with an empty triangular shape, like a pyramid inverted, and a series of these iron warriors that were embedded in the walls. Behind the stairway, you saw means of smelting metal and other forms of material.
DM: Okay, so you can move Bigby's Hand. I'll see how many feet it can move, because it'll pick up the sword, I don't know if it can--
Player: It can move 60 feet.
DM: It can move 60 feet? Okay then! Then yes, it definitely can. It darts over to the guy who hit you with the flames, so go ahead and make your attack. I'll say for the purposes of this, I'll add an additional d12 slashing damage to its strike.
Player: I got an 18. Plus something; I don't know.
DM: 18 to roll for its attack, plus your spell attack, so that definitely hits.
Player: Oh, plus 11. Yeah, that's huge. Is this a sword attack, or is this Bigby's Hand's clenched fist attack?
DM: I'm making it a clenched fist attack, so it's 4d8 force damage from adding an additional d12 slashing because it's wielding a sword while it does it, because that's cool.
Player: That's cool. Okay, I love you, and thank you. So I roll 4d8. Cool. Oh wait, wrong one.
DM: 4d8 plus 1d12.
