I just completed my time with Lewena, and have joined the ranks of those who have gotten all three cards from her.

I averaged 5 to 8 wins per window. I rarely won 6 or 7, it was always 5 or 8. Occasionally I'd win less occasionally more, but most of my runs ended with 5 or 8 wins.

To get all three cards I had 156 wins. In them I got 4 Terra, 1 Bartz, 1 Onion Knight. All four Terra dropped between wins #25 and #55, Bartz on #124, and the Knight on #156 of course. This works out to a 1:26 drop rate for any card, but of course I went from 55 to 124 and saw nothing in that range so of course RNG is RNG.

The best advice I can offer other then the play your cards to the left and top to bait her, is that learning to play fast is key. Most games are losses or draws, and getting them out of the way so you can get a re-deal that has the potential of winning is key. Getting a few more games per window helps over the long run.

Good luck to all of you with your decks and RNG drops!