User blog comment:Nmtan/Review Waterfall & Mud Dragon Ratio/@comment-11259553-20130819124924/@comment-10760902-20130820022710

okay, I still testing this, I'm waiting for the next breeding. But so far I don't see War comes from this combination. Have you get confirmation from the guy?

We can always test to prove our theory, if the Viking element is not Flame in the breeding system, as you say, let's test Thor + Icecube and see if there is Cool Fire, Soccer posibility.
 * If Cool Fire, Soccer is a possible result, Viking == Flame
 * If not, Viking != Flame

I'll check this later too. But for now since Thor is busy, I will test the Olympus + Terra see if there is
 * only Mud & Waterfall => Olympus == Sea
 * other posible Sea Dragon, Terra Dragon => Olympus != Sea