The summon system should be a little more rewarding. You work hard to get enough points on a quest to get charms and especially advance charms and then you spend 5 and get all weak common cards...
The boss is actually pretty easy. All you have to do is run fast and do a hit and run type battle. I didnt even need all the extra hearts. Use an elf sword and a sapphire staff.
to get money fast you get rubber balls, put as many as possible on the screen then you catch him on fire then when the rubber balls catch on fire then you use the fire hose to put the fire out and you get double the money because its negative and positive at the same time.
 "Epic War Legends"){kind=icon}
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Click on the Account Settings tab on the top right and then uncheck the "Sounds On" box