ok, so what i did was went to the oracle and spun a golden nymph (yay me!) and i go to arena to check up on my death rush deck. it has 10 wins and 3 losses. ok, so i thought that my rating would be 70... but its not. its -10.... what....? either zanz changed the formula (which was 1st grade math) to something maybe slightly more complicated... maybe.... idk whats going on