Cynthea is a paid to play hero which requires you to make a purchase.
Gold Attributes:
Hero ATK up by 20%
Increase Range HP by 50%
Increase Range ATK by 30%
Increase Army ATK by 20%
Collecting Shards:
You need to purchase multiple packs to upgrade this hero.
Note: Cynthea is a very handy Range focused hero for those type of
players who use Range set ups to attack.