Changed shovel functionality. It still generates swamp if on grass or desert next to water, and water if on swamp next to water. However, if you dig on grass or desert that is not adjacent to water, you will create a hole trap, and have a 1 in 5 chance of finding a coin if there’s no item on the tile. Dig again, and the hole trap is destroyed. The hole is also destroyed when swamp or water is dug into existence around it.
The hole trap functions like the spider web, increasing struggle on the tile by 1. (It’s not affected by fire.) If the hero digs it, it is automatically revealed.