Tips and Tricks
You will earn more card points at the end of the battle if you take over more towers.
Also if you destroy a tower all the way, it will become yours; however, if the enemy destroys that tower in turn, it will become theirs.
Make sure to add cards to your deck that will draw cards at the end of a turn. They will be valuable at the tail end of battles, especially when the enemy still has multiple warriors left in battle, and you only have one.
Pay attention to Pyromancers and other units with splash damage, as well as cards that deal splash damage. When you end up at a disadvantage with the number of cards you have, they remedy that by allowing you to damage, and possibly kill, multiple enemies (and the headquarters, and other buff buildings) at the same time.
As often as you can check the daily deals they might give you rare and special cards that are extremely uncommon to earn when you are simply buying regular booster packs.
Rare cards are the best kind to add to your deck, as they are either the best fighters, the best buffs, or the best building cards.