It's a fantasy role-playing game.

DM: You are Scanlan Shorthalt, a gnome bard . You are the member of the famous group of adventurers. Previously, Tiny Vax, thanks to a potion that does that. you managed to go ahead and put in an Immovable Rod within its stomach, which held it up for a moment, before it decided to truly gain the advantage it needed to escape the circumstance, allowed it to tear through its body, as well as an arrow that was shot by Vex, towards her brother, in the hopes of, I don't know, being a symbol of hope?
DM: Trying to remember how this works. College of Lore. I don't know if it is. Because what you do is you grapple--
Player: Oh, no, it's a War Caster feature.
DM: Oh, War Caster! Thank you, that clarifies it. I was like, I don't see this in the College of Lore! You're confusing me! So as a War Caster, when a hostile creature's movement provokes an opportunity attack from you, you can use your reaction to cast a spell at the creature rather than making an opportunity attack. So yeah, if you wanted to go ahead and attempt to grapple--
Player: I will grapple him and pull him back down.
DM: You can totally attempt that. Bigby, go ahead and make a strength athletics check to beat a dragon's strength. Bigby is just slightly under the strength of the dragon, so let's see. It's a roll-off.
Player: It's a roll-off! Oh my god. This is a critical roll. That's a two.
DM: It was a 19 on my end. Natural 19. As Bigby's Hand reaches forward, the angry, wounded, frustrated, furious Umbrasyl just kicks the hand away, pulling up.
