This mod adds a block known as "Drit" which unlike it's counterpart "Dirt" will cause damage to any entities that stand upon it. The damage will occur progressively as ticks, any entities killed by Drit will drop their items as normal.
To craft a block of Drit you merely need to put 8 dirt and 1 bone together in a crafting table (or any form of crafting) and suddenly you'll have an amazingly awesome block of Drit.