Not quite a pro tip.. more like a small one?

When you go to the Senary web shop, there's a Tarot draw. Try drawing once every day to get small rewards~ I usually log in right at 9 AM, click the Prism? in the top right corner, go to the Senary web shop, and tap the Tarot draw banner to claim my reward. The rewards aren't huge, but I'm satisfied with getting small amounts of keys or gold~