Friend Card

Friend Cards appear in Kingdom Hearts: Chain of Memories as a type of playing card which summons an ally of Sora or Riku to help them during battle. They can be identified by there green borders. Friend cards behave identically to Attack, Magic, and Summon cards, but unlike the other types of playing card, they cannot be collected, and are instead randomly obtained during battle, and disappear when the battle is finished. As in Kingdom Hearts, these allies generally cannot be used on all worlds. Generally, sleights involving Friend Cards are simply more powerful versions of the individual card's effects.