User blog comment:Dfukymano/BEST WAY TO ENHANCE/@comment-5791178-20121128221854

That's the easiest way, if you have enough.

If you don't have enough or you don't want to spend PP to buy them, well, here's what I do.

1. I clear out my deck and make sure I have exactly ten spots missing. (So that's 45/55 cards for me.)

2. Then I go to Area 2- 5 in the Quests. It only costs 3 Energy Points to get one guaranteed common card. So keep tapping the screen until you've either run out of Energy or you've collected 10 cards.

3. Then, go to your enhancing page, select the filter "Newest", then pick "Select All".

4. Enhance!

When you have 10 commons, there's a better chance your card will have Great Success, and plus it just levels the card faster anyways. It usually does from 7 to 9 levels from a level 1 rare. Then from level 9 or 10 it does 4 to 5 levels, and from then on it almost always gives you 230-290% increase in level, so you'll most likely gain 3 levels at a time.

I don't know the statistics for Ultras yet but I'm assuming it's close to it. :)