It's a fantasy role-playing game.

DM: You are Jester Lavorre, a tiefling cleric . You are the member of the famous group of adventurers. Previously, Fjord notices a figure hiding in the trees. Beau sneaks up on it and sees it is a troll, wearing a bone necklace very similar to the wind chimes.
DM: From behind the tree, one of the claws-- The long, stringy hair dangling, somewhat stuck to its neck, shifting with the light breeze that blows through as it looks back and watches the illusion turn and shift. Is it relatively close to the tree, the illusion?
Player: Pretty close.
DM: It sits there and waits, shifts.
Player: I'm going to have her take a couple of steps away from the tree.
DM: It shifts back in its space a little bit.
Player: She's going to step back towards the tree.
DM: As soon as it gets within about five or so feet, the illusion, the troll creature reaches out and swings out to grab the illusion, passes through, and the claws (slash) into the tree. It goes (frantic grunting) and then vanishes behind the tree. You watch it dart, the shadow of it vanish behind another tree, and it's moving further away from where you are.
