Talk:13M Downloads Campaign/@comment-35557010-20180531062822/@comment-32788591-20180531091459

F2P here as well. It's all random.

If you're aiming for a 4-star Servant then yeah, maybe it is better to try and use the guaranteed 4-Star card that comes with a 10-roll since there is a better chance to get your desired item with that.

For 5-stars, most recommend single rolls. Mainly so you can pace it. Like, if you get nothing but 3-star cards, you can at least stop early and wait to try again. Most of my SSRs were from single rolls too.

Also, it's not exactly right. Just because you got a 3-star doesn't mean your chances of getting a 4-star drops to zero. I mean, I did a 10-roll once on the Fujino banner and she popped up after a bunch of 3-star Servants. In the end, it's really just random.