It's a fantasy role-playing game.

DM: You are Fjord, a half-orc warlock . You are the member of the famous group of adventurers. Previously,  However, upon noticing that some of the buildings on the eastern side of town began to light up with what appeared to be flame, you began to approach rather rapidly, seeing members of the city's citizens fleeing, screaming, and apparently there seemed to be some sort of attack. Upon going into the town, you realized that a number of these buildings were being set fire by an incursion of Gnolls.
DM: Yep. It appears into your space in a burst of dull greenish-blue fire, and there you see it, dripping with salt water across its blade.
Player: Can I use my bonus action to cast Hex at that right gnoll?
DM: You may. That one is now hexed. You watch as the gore that's been dripping from the front of its body seems to roll up its torso in reverse before it slips into its armor and grasps itself, the darkened shadowed gore now holding it in place as the Hex curse.
Player: Can I reach back and fire Eldritch Blast into it?
DM: You may.
Player: 16.
DM: That hits. Plus 1d6.
Player: Six plus four, ten, 1d6, 15 points of damage.
DM: 15 points of damage. (explosion) That one immediately drops what it was eating as the blast slams into it, as it's confused by the wrapping of the Hex. As it reels and almost stumbles onto its back, its foot crushes one of the nearby skulls, and there you see this gaping wound in its chest where the armor's been sundered. There's a smoking plume of blackened, horrible, shaded smoke pouring from it.
Player: Can I use my distance to move over here, if I may?
DM: That's as far as you can, there.
