Summon Card

Summon cards appear in Kingdom Hearts Chain of Memories and Kingdom Hearts Re:Chain of Memories as a type of playing card which summon magical creatures. They can be identified by their blue borders, which they share with magic cards. Six of the seven summon cards in the game represent the summons Sora obtained in Kingdom Hearts, and are used in much the same manner. The seventh, Cloud, is a new summon unique to the game. Each summon can be upgraded to more powerful levels by stocking multiple copies of that summon's card, though they can also be used in various combinations with other summon cards, as well as attack, magic, item, and friend cards to perform different spells and summons unavailable in the other games. Many of these new combinations are Kingdom Hearts versions of traditional  spells like "Tornado" or "Quake".

Summon cards are only available in Sora's story, and are not used by any enemies.