amulet_fortune
When Hinamori Amu character transforms with all four of her guardian charas Ran (shugo chara!), Miki (shugo chara!), Suu (shugo chara!), and Dia (shugo chara!), she turns into Amulet Fortune.
She represents a girl with four kinds of hearts, similar to a four-leaf clover, which represents true love in the language of flowers.
Her counterpart is Seven Seas Treasure.