Combining More Cards To Level Them Up
The fun thing about the rewards cards is collecting enough of them to level up and make them more powerful. I just did so with two cards that I use pretty often: The Venari Bonesmith and the Pelacor Deceiver.
I combined 25 Bonesmiths to get a level 4 card and while it doesn't increase its magic damage, it gets the poison ability which can be quite deadly. 2 damage per round kills even the best of them. Especially if you have a haunted spider as well.
Combined 100 of them to get a level 6 deceiver which gets the Backfire ability now. Curious to see how effective it is but with speed and flying, I expect a lot of attacks will miss it, especially in non-magic battles, It will be rather useful.
Decided to put both cards on the rental market first for a total of around 15 DEC per day.