Greetings friends!

I found these three cards useful. They have higher mana cost but their attacking power is also very high. I chose the cards from different splinters. For example first card is from Earth, second is from Death and the third one is from Life splinter. Attacking power of first two cards is 5 and 6 respectively while the third has just three attack, it has close range ability to make it useful. These cards are at level two right now. I am going to increase their level gradually.

I also purchased this card:

When I purchases this one, its price was $0.13 for a single BCX card. I purchased five for levelling up. But now its price has dropped. However, this is not a bad card. In fact, it helped me to win a few battles. This dragon monster has furious ability which means it gets enhanced abilities after getting attacked. I'll buy more cards in future.

Thanks!