Croockadile and the Thieflings

The Croockadile lives in the swamps and has a similar skin texture to the drowned.  They can torpedo through the water every so often and can steal items in your hotbar(ones that aren't diamond, gold, iron, stone, copper, or neatherite related.  Thus simulating weight).  The only way to get the items back, is to "trade" them for raw fish ,or kill the croockadile.  Since they live in the swamp, you better build a boat.  They can also come out of the water at night only.  When they do, they lay eggs that hatch into Thieflings.  Thieflings can be tamed by players to help steal items from other players(only when attacked like the dogs).  Or they can be left alone and grown into Croockadiles.  Your choice in your worlds.