Board Thread:Questions and Answers/@comment-75.68.102.16-20170103131837/@comment-30753249-20170103180202

What I've done to get my silver and bronze cards up to lvl 50 is:

Find a card that can solo Battle 44 and take 2 cards with it to lvl (xp is only given in sufficient quantities when you battle characters whose lvls are at least (lvl of character) - 3, which means you can use thise battle until those (I call them *carried*) characters are ~43

From there I use a team composed of:

Red Son Deathstroke (Promotion 10, lvl 59) + Rebirth Raven (Promostion 7, lvl 50 + Card I'm wanting to level up

to complete battle 47. (you may have other cards that can solo this battle... but for me... I need two super powered cards to carry the 3rd.

Always remember to take advantage of any double xp event to help with this. Also, taking a character into online battle can give it more xp than you might otherwise get repeating a lower lvl battle... For example, I've noticed that I only receive ~1000+ xp when doing battle 33 for a chacter lvl 36+

And one final note:

The Bonus Battle (last one in the list) gives the most Credits and XP / energy.... that is to say it's the most "cost" efficient battle... Again I am not able to solo the battle... so I take Deathstroke and Raven as above along with another character... the final round I've found always gives out 4,300 credits... and the other rounds are over 2,500        I use this battle for my credit grinding anyway so I just swap low lvls in the 3rd slot to be carried each time

Hope this helps