Mythic essence question.

Before I knew that the they were gonna change the way the event pass functions I was planning to buy the next one ( the one after arcane )( First time to spend money on this game) To max the pass and get the 125 mythic essence and can finally get ashen guardian shen as it is expected to be in the mythic essence soon . But now I saw a full video on the new event pass and how they are gonna to be like acts or whatever, They removed mythic essence from the pass! The only way is by using the ancient spark thingy and the drops for mythic essence are poor. So is there anyway I can get to 125 mythic essence in the current 2 months?