A mob spawner is a block in Minecraft that can be used to spawn mobs. It is a rare block that can be found in dungeons, strongholds, and abandoned mineshafts. To craft a mob spawner, you will need the following materials:
- 1 spawner cage
- 1 mob egg
- 8 cobblestone
To craft a spawner cage, you will need to place 8 cobblestone blocks in a 3×3 square. The mob egg should be placed in the center of the square. Once the spawner cage is complete, you can place it on the ground and use a flint and steel to activate it.