Win 5 ranked battles without using Neutral Monsters
It actually 3.
How I completed my dragon quest today.
I started with 2 straight win, then straight 8 loss and in the end 3 straight win again.
Some time it really become pain to complete the quest especially when you focusing on quest summoner instead of winning the match. I like to focus in completing the quest first instead of paying attention to which summoner is best for winning the match.