Pseudorandom maps blender

+ Secure hold on the table thanks to the weight of the batteries
+ Fast

o According to
o The transparent middle part is more hindrance than a help. Without this slip, the whole process goes much faster vorran

- Cheap design, but does not give the impression to break apart the same
- The cards are not 'properly' mixed but mostly stacked abwechselnt. The coincidence is so easy to describe theoretically, but practically good enough
- When mixing now and then fly the card from the device, particularly plastic poker cards due to its low friction.

The price / quality ratio I think is Good (2).