I am making an adventure map and I want a person to pass out on the ship and not see anything at all, at that moment the chat says what just happened but when i do /effect @a minecraft:blindness 255 20 (correct amount of time) they can see blocks around them. But during the time they read the chat they are teleported to a different area. Any ideas or what I should do?
Maybe tp them to a small room made of barrier blocks, and nothing around them, so it looks like they're in a void of some kind?
You cloud try running a command to teleport them to a room made completely out of black blocks, or the floor they're on and coal blocks all around them, then teleport them back when needed.