It's a fantasy role-playing game.

DM: You are Keyleth, a half-elf druid . You are the member of the famous group of adventurers. Previously, Grog moves around, but doesn't start reverting out of mist form. Vax and the first worm are hit by a frost breath.
DM: All of you who are mist form now revert, and you fall about five to ten feet and catch yourself on the ground, no harm no foul.
Player: As I revert back can I slide down that wall to create some--
DM: Did you want to move first over here to do it?
Player: Yeah.
DM: So you shift over, you drop the spell.
Player: Uh-huh, I drop the spell, and as I drop the spell I want to grab some wall and bring it down to make a big vibration, right in between these two motherfuckers.
DM: Okay. Make a strength check.
Player: Oh, jeez Louise. Oh, that's not too bad. It's not a saving throw.
DM: Correct. Just a strength check; add your strength modifier.
Player: 18?
DM: 18. All right. So, as you slide down, you grab onto some of the loose rock and (rockslide) they come tumbling down as you slide down. So you land here, at the base of the two worms, and rocks tumble around you at the base of the cave-in. And you get the sensation that you may have made a decent bit of racket right around your feet.
