Treasure

A lot of people get upset when their treasure is stolen early game. It's important to realize that the items you get from treasure aren't really valuable. There are a few important facts to note about treasure and the purpose it servers.

Treasure serves the purpose of acting as bait for somebody to attack you as well as the purpose of creating cards.

To create the card you need one of each of the colors. Each race has the ability to get certain colors. Legend of the Cryptids does this to encourage people to battle. Once you gather your treasure, you create a card. This card is generally weak compared to its equal rarity counterparts but can be combined with another treasure card to a higher form.

Sometimes events require you to gather treasure. Cards from even treasure are generally better than cards from normal treasure.

Finally, stockpiling treasure acts as nice bait to get people to attack you. If you want people to attack you, use a weaker face card to represent yourself and don't put too many points into defense. By doing so you're baiting them in.

What I want you to pull away from this:
Treasure isn't valuable. Treasures primary purpose once you get the card is to donate to the guild. Stockpiling treasure is a good way to get people to attack you.