It's a fantasy role-playing game.

DM: You are Grog Strongjaw, a goliath barbarian . You are the member of the famous group of adventurers. Previously, She tests the roots of the cursed tree for any illusory magic, but it is solid and real. you attempts to level up the Titanstone Knuckles by destroying the kitchen, much to Scanlan's consternation.
DM: 20, okay. Vax and Percy, you guys manage to break free of the vines. Scanlan, you are considered grappled, so your speed is zero. The vines are actually holding you against the side. They're not hurting you or anything, but you cannot actually move from your space 'cause you're being held against the wall of the tree. That ends the legendary action. Grog, you're up.
Player: Can I run immediately underneath Sondur?
DM: Sondur, yes you can.
Player: Are there any vines that are hanging from him? There are none?
DM: There are vines hanging from the ceiling, but he himself just kind of sunk into the tree and then emerged above, he himself does not have any wayward vines that are just hanging.
Player: Right. Are there any vines that look like they might be thick enough for me to try and climb up if I wanted to get to his height?
DM: Probably a couple, yeah.
Player: Could I grab a few of those vines to try and climb up to where he's at?
DM: Make an athletics check. With disadvantage. And then you have advantage because you're raging, so just a straight roll on that.
Player: Athletics. 23.
DM: 23, all right, let me check and see how far you can actually climb at that speed.
