Quoted By:
Holy powder is the most used. Cards are usually up for HP, while seldomly you'll find a card willing to be sold for nothing but Cure Water. So I'll say HP is worth more than CW
To get HP you just need to work it. The quest bosses gives you HP. Selling cards you get gives you HP ( in example, that rare you get when you hit level 20) if you do battles each week you get gems, and you can buy HP with those.
Pic related, hot homunculus.
