What items can you get by "using" water/mud?

Question

By "using" mud near Venore there's a chance you can get the item "leech" which is required for taming water buffalo. Are there any more items?

Answer 1

Yes, you can also dig up a dead snake or small diamond.

Here are the statistics after 62 trials.

Source: https://tibia.fandom.com/wiki/Swamp_(Diggable)/Statistics