4 days and already legend …

Thanks so much !

I got one question
Am I guaranteed to receive at least 1 legendary from all sets of expansion after the abovementioned goes live ?
I mean if I have 10 classic packs, 10 WOG packs, 10 MSG packs and 10 UNG packs, and open them in August, will I from here get at least 4 legendaries?

Nice guide!! Thanks a lot!!