A possible concise summary is:
The video is about two Minecraft players who are challenged to replace a diamond throne with mycelium blocks and hide the diamonds in a secret vault. They have fun and encounter some difficulties while doing the prank. They also announce that they will be part of the Minecraft live stream event.
Some possible facts extracted from the text are:
1. Iskall and Mumbo Jumbo are partners in a business on the Hermitcraft server.
2. They were challenged by a chicken to replace the diamond throne with mycelium.
3. The diamond throne is hollow and contains over 4000 diamond blocks.
4. Mumbo Jumbo built a secret vault to store the diamonds and used a button on the barge as a hidden activation device.
5. Mumbo Jumbo and Grian are going to be part of the Minecraft live stream.