Collect the indicated number of medals to unlock the corresponding bonus.

5 medals: Five extra maps between 21 and 30
10 medals: Leoknight E Card
15 medals: Polymorph E Card
20 medals: Five other extra maps between 21 and 30
25 medals: Astral Queen E Card
25 medals: Dragon Helm E Card
30 medals: Lightcraft E Card
35 medals: Five extra maps between 31 and 40
40 medals: Energy Flash E Card
40 medals: Tetramorph E Card
45 medals: Darkcraft E Card
45 medals: Talisman E Card
50 medals: Five other extra maps between 31 and 40