In live duels opponent once possessed is just recharging.. not always but very often. Why is it done so, very frustrating
Also I picked up a few times Saulot and his mega possession move works right away and yet should be a subject to warm-up.
In general it is done good and fun but I would say rewards should be a little bit more to keep greater interest over time, may be a few gems for a last battle reward too because amount of time and efforts required to win 6 battles is a lot, requires to know a lot about monsters skills, stats and tactics and after a few duels i personally started to think if it is worth to win all 6 battles of another one just for a few elemental cells. I mean it is fun to do a few but for more kind of boring, at least for me...
May be SP can introduce bigger rewards and also a way to lose some too to make it more interesting, more competitive and more worth spending a lot of time on it.
For example higher rewards for each node but also removing 50% of accumulated rewards on each lose. Something like this would make more sense and keep more desire to come back again and spend some gems to do more duels.