if it spins and you have to get the ball into it for magna lock that would make sense, other wise i cant see much reason for it.

Under the tesseract written on the pf it says spin to unlock the power of the tessearct or something like that, it looks like there might be a magnet under there as well?
It may have some sort of hidden power as the pf writting suggests or it may just do the same thing as the lamp on totan.