A cube where all* the creatures are Biovisionary.
Assuming this is to be grid drafted, what is the most interesting design set-up:
1) Biovisionaries in the Basic Land box (and no other creature cards in the cube)
2) Biovisionaries in the Basic Land box, plus rule: No other creature cards can be in your main deck. Then add cards like:
3) Biovisionaries (only) in the main cube and have to be drafted.
4) Biovisionaries and a peppering of other cards in the main cube