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, There, they find a cave filled with magical darkness. Keyleth shifts into an earth elemental to scout the cave, finding that it contains a strange planar rift and a group of grick.
DM: Interesting! Okay. So Clarota, at this time, is also going to attempt a Mind Blast on the creature. It moves to the back of the boat and while it's currently grappled, he's going to attempt that. The saving throw does succeed, so it only takes half damage. Okay. Marking that. And then as you do Telekinesis. Roll a d20 plus five.
Player: Okay. And do I have advantage because of the grapple?
DM: The grapple does not give you advantage, no. So you have disadvantage on the roll, technically, because you are scared of it.
Player: And that's my what?
DM: Plus five.
Player: 17.
DM: 17? All right. So! As you focus your energy once again-- even just facing this creature is a terrifying thing-- you see that one gleaming bit of red that's piercing through the darkness. The secondary form around it dissipates. Where there was once two gliding, one of them vanishes entirely as that gleaming red is suddenly much brighter, yanked from its socket. It now gives out another painful screech (screeches) as it is blinded, being crushed by a Bigby Hand, and you now have drifting amongst you at your control one of the eyes of this creature. (all laugh)
