sethderp

/summon Item ~ ~3 ~ {
  Riding: {
    Riding:{
      id:"FallingSand",
      Time:1,
      TileID:137,
      DropItem:0,
      TileEntityData: {
        Command:"/summon FallingSand ~ ~15 ~ {
          Time:1,
          TileID:72,
          Data:1,
          DropItem:0,
          Riding:{
            id:\"FallingSand\",
            TileID:137,
            Time:1,
            DropItem:0,
            TileEntityData: {
              Command:\"/setblock ~ ~1 ~ air\"
            },
            Riding: {
              id:\"FallingSand\",
              Time:1,
              TileID:137,
              DropItem:0,
              Motion:[0.9,0.9,0],
              TileEntityData: {
                Command:\"/summon Item ~ ~5 ~-1 {
                  Riding: {
                    Riding: {
                      id:\\"FallingSand\\",
                      Time:1,
                      TileID:137,
                      DropItem:0,
                      TileEntityData: {
                        Command:\\"/summon FallingSand ~ ~15 ~2 {
                          TileID:1,
                          Time:1,
                          DropItem:0,
                          Motion:[0.0,0.9,0.9]
                        }
                        \\"
                      }
                    },
                    TileID:72,
                    Time:1,
                    DropItem:0,
                    id:\\"FallingSand\\"
                  },
                  Item: { id:1,Damage:0,Count:1 },
                  Age:5979
                }\"
              }
            }
          }
        }"
      },
      DropItem:0
    },
    id:"FallingSand",
    Time:1,
    TileID:72,
    DropItem:0
  },
  Item: {
    id:1,Damage:0,Count:1
  },
  Age:5979
}