Talk:FGO 2016 Summer Event/@comment-29410906-20160820134040/@comment-10691202-20160820135904

From part 1 of event, Mana Prism is already available for grinding using the mats (900 prisms in total via the 3 different choices for each of the 15 development quests) = 3 x 15 x 20. Each of the choice you make will give you 20 prisms first time you clear it (i.e. you cannot keep doing the same choice to get 20 prisms each time)

2nd part of the event, based on the description on the official website, also seem to have another set of development quests again, though not sure if gonna be 15 quests again (can be more or less, no idea)