Board Thread:Questions and Answers/@comment-33011666-20170902101222/@comment-33728484-20170902163638

The potential system activates when an SSR is Z-awakened to UR. At this point, you can open the 4 paths as soon as you can, even without any orbs. The SA level has nothing to do with this, except for the bottom right path, which gives the strongest boost and requires a SA10 level to put all the orbs in (just the orbs, though, you can unlock the path whenever you want).

If you dokkan awaken the card, it will become a different one, so you'll have to spend an hourglass and reverse it to its previous form in order to open a new path (in case you manage to pull a dupe), and then reverse it back for free. With an LR you'd have to spend two hourglasses and reverse it twice. So here's how it works:

1) If the character is worthy of being SA10 and 100% in the system, open as many paths as you can, starting with the bottom right path (which is the best one) and the top left path. If you're not planning to get him to SA10 and you just want to make him a little bit stronger, go with top left. Once the paths are open, they'll always stay open, you'll be able to add the orbs whenever you want. Just keep in mind that only the best units deserve the orbs in the potential system.

2) If the character has a farmable SA (like Goku Black and Merged Zamasu) do their events and get them to SA10. Otherwise you can use identical cards (if you don't need them for the potential system anymore), or even cards with the same name that you've summoned and you don't need. The chance to raise the SA may vary between 50% and 100%, depending on whether the cards you want to use as training partners are SRs or SSRs, and whether they're Z-awakened or not. But in most cases you'll want to use Elder Kais, which raise the SA of every single unit, no matter if they're SSRs or LRs.

3) Once you've used all of your dupes, you can dokkan awaken the card if you want. If you've not opened all its paths and, say, three months later you pull another dupe, then you can reverse it back to its previous form and open up a new path to make it stronger. Here's one tip, though: if that card is featured on a banner and you're planning to keep summoning on that banner, you might pull more dupes, so be sure to use just one hourglass and then open the new paths all at once. Hourglasses are a bit expensive, you want to use them as little as possible.