I have created a deck based on rank 5 xyz. Preety good against any strategy that uses monsters, but as far as I'm aware, there are more spells than monsters in a prophecy deck, so i did a bit of studing, and found the best counters for it:
Anti-spell fragrance.
Lets say you take turn one. You do the summoning, xyz blabla, set it, and end turn. on sp phase, activate it, and watch as he sets 5 cards. xyz wind up arsenal zenmaioh, and destroy 2. and diminish the efficasity of the spellbook of judgement, and if lucky, destroy spellbook of judgement itself
Ill later talk about eradicator epidemic virus