Skarliss is a paid to play hero which requires you to make a purchase.
Gold Attributes:
Hero CRIT rate up by 25%
Increase Training Facility Capacity by 10%
Increase Army HP by 25%
Increase Army DEF by 25%
Collecting Shards:
You need to purchase multiple packs to upgrade this hero.
Note: Skarliss is a very handy overall for army boosts and training
facility bonus.