Arcana is an energy that can be recharged over time. The ability to accumulate Arcana can be obtained by eating an Arcana Apple.
Arcana is measured on a bar from 1-20. 20 is the maximum amount of Arcana you can get.
Arcana can be used to add more power to weapons and can allow you powers to fire energy spheres. It is also required to use some moves. Arcana can also be used as a substitute for other pure energies if one lacks that pure energy, as seen in PHILIPS Throw.
Arcana can also be extracted into Arcanium.