To be honest, I could probably play jam without many cards because I hardly bother charging anything but dragon. I want to learn more sophisticated combos (DP, ryujjin, gekirin, blah blah etc) but nothing was really better for me than confirming some kind of Gekirin or IAD gekirin into big puffball corner damage or just taking someone to corner midscreen so I can do the same.
You'll have to teach me that stuff.