It's a fantasy role-playing game.

DM: You are Tiberius Stormwind, a dragonborn sorcerer . You are the member of the famous group of adventurers. Previously, Percival shoots Clarota in the head, releasing Scanlan, who had been grappled by the turncoat. As the remaining illithids take heavy damage, the two of them Plane Shift out of the room in self-preservation.
DM: What are you doing? The other doorway isn't blocked, you have mind flayers running in, you have probably more and more swarming from underneath the temple, probably over at some point, from what you've seen of the temple structure.
Player: Okay, so I'm going to attempt to crush the Horn. With a thousand pounds of pressure.
DM: Okay.
Player: Because my Telekinesis is still going.
DM: That's true.
Player: I can't do anything else without dropping this thing because as soon as I do anything else, I drop the horn. So I have to do that first.
DM: Okay, so you use your action, go ahead and roll for that, for the crushing of Telekinesis.
