Talk:Alliance/@comment-81.246.8.106-20130829125601/@comment-13943053-20130829144004

It's ONLY based on contribution. The only thing time has to do with it, is the maximum amount you can offer per day: you can't basically fill the gauge faster than a set amount due to that limit (Ok, you could inivte new people daily, have them donate, kick them, invite more and so on to speed up the process but that's very unlikely to happen :P).

To fill the SR gauge you need 750 Rares, so with 15 people donating 5 cards a day, it would only take 10 days to get one. In 10 days: with 12 people donating an average 4 R cards per day, it took 10 days for my alliance to go from 25% to 98% of the SR gauge. With old, non-donating members, it took months to get first SR (only 3-4 people did donate).

In short, if you want those SR, it's time to get more active and donating members. You'll get a 4-star card done in a couple months!