The number in the circle is an indicator of the strength of the card. The color of the circle is an indicator of the character's belonging. Snowflake refers to a character's ability to withstand damage from cold, water, and fire (but not from cold fire). Magic snowflake means high magic abilities of the character (regardless of race) Three white hearts mean high stamina of the character, but in case of a loss, the card does not return to the deck.