Talk:Crystal Invoke/@comment-67.169.103.193-20140501070214/@comment-24850617-20140501070720

The common argument goes as follows,

For single reinvokes, more chance to get more A ranks that you might want, as you can reinvoke only the ones you do not want to keep, but risk not getting any A ranks at all if you have extreme bad luck.

For mega, you are garuanteed one A rank, but in worst case scenarios, it forces you to choose between keeping 9 trash cards for 1 good card or risking a reinvoke to potentially get >1 good cards.