def etap3():
    #tworzymy kulę ze szlamu
    shapes.sphere(SLIME_BLOCK, pos(4, -30, 0), 1, ShapeOperation.REPLACE)
    builder.teleport_to(pos(6,-32,0))
    builder.mark()
    builder.face(EAST)
    builder.set_origin()
    builder.move(FORWARD, 65)
    builder.line(NETHERRACK)
    builder.teleport_to_origin()
    builder.move(UP, 1)
    for i in range(10):
        builder.move(FORWARD, randint(3, 8))
        builder.place(FIRE)

    builder.mark()
    builder.shift(2, 0, -4)
    builder.fill(MOSS_STONE)