Monster Egg

A Monster Egg is a block that spawns Silverfish when broken. Monster Eggs have indentical looks to either Stone, Cobblestone or Stone Bricks, and are natrually found in Strongholds and rarely in Extreme Hills biomes, hiding among the real blocks. When breaking it with a Pickaxe it takes noticeably longer to mine than regular Stone, Cobblestone or Stone Bricks, making it relatively easy to distinguish from the regular blocks, if one is careful enough. The block can be destroyed by hand fairly quickly, unlike regular stone blocks. Monster Eggs are meant to decieve players. When mined, it will instantly spawn a Silverfish which will instantly attack the player. Also if the player attacks a Silverfish directly, nearby Monster Eggs will break, spawning other aggressive Silverfish. If the block is destroyed by a explosion (Creepers, TNT etc.) the Silverfish will die in that block. When a Silverfish is not pursuing the player, the Silverfish will go to the nearest Stone, Cobblestone or Stone Brick and go inside it, turning the block into a Monster Egg. When mined, the Silverfish will have full health. Monster Eggs can be made by placing Stone, Cobblestone or Stone Bricks and tapping a Silverfish Spawn Egg on it, as the silverfish will go inside it, converting the block into a Monster Egg.