Watch & Earn missions. How many of these are there ?

https://i.imgur.com/M938QaD.png

https://euw.leagueoflegends.com/en/news/game-updates/special-event/learn-more-worlds-season-2018-event#faq

First image is taken from sticky on EUW boards plus my personal progress. Then even official thread about mission says there are only 4 missions. Thing is, they all count towards Epic Worlds icon, SO even towards Mythic Worlds Icon. So how many are there really, because of this misinformation, people cannot get the chance to obtain Mythic Worlds Icon.