Rerolling question: EMIYA

Emiya’s great for farming. Right now, he has one of two strengthening quests. The biggest issue is his card set’s compatibility with his Noble Phantasm. Also, his third skill *initially* only boosts his Arts damage. That being said, his first strengthening quest changes his ability to where it boosts Arts, Quick, and Buster damage simultaneously and his second quest shouldn’t be too far ahead in the future (sometime after Ilya Prisma event)

As a player who used him as his main damage dealer for three months, I’d argue that he really is worth building up but he’s also very problematic as well. Personally, I think you should keep him

He's a very good Archer but requires a lot to develop and both his strengthenings to be fully realized. Just like in the anime where he is unresponsive at first then becomes bae when you realize exactly who he is. If you really like him though just keep investing in him. He does become excellent after the second strengthening. Also it does help that he has some of the best animations in the game