Board Thread:LOC General Discussion/@comment-5499190-20121204120328/@comment-5499190-20121206112827

Nothing stops you from getting the same duplicate defence guardians btw so I'm not sure what your point is. As I said above, a person at lvl 100 will have 900 stats, most people will have around 300 in energy so their atk will be roughly 300 and same with their defence.

Assuming they have 10 different frontline cards, 5 for atk and 5 for def, you can still have 20 duplicates for attack and 20 duplicates for defence. That's only a 50 card deck in total. IIRC, at lvl 100 you have 65 or 70 card slots so that's more than enough.