In Kingdom Hearts: Chain of Memories, the Megalixir is the ultimate Item Card, obtained by opening the Room of Rewards on the 12th floor, Destiny Islands. It restores all Attack Cards and Magic Cards, and even resets the reload counter. It also is the most crucial piece of the powerful Sleight Holy. In Kingdom Hearts 358/2 Days, Megalixir is an Item Panel which fully restores all of HP and Magic to you and your comrades in the same map.