Board Thread:Question and Answer/@comment-70.122.243.44-20140929025058/@comment-172.2.19.86-20140929073350

You could:

- Use a level 40 R card with Arcana training + Arcana's blessing.

- Defeat 32 Archwitches with the card in your unit (less if you use an EXP booster).

- Defeat 26 Fantasy Archwitches with the card in your unit (less if you use an EXP booster).

- Use it in your campaign team to gain little bits of EXP, but this would take a long time by itself.

Check the Upgrade page for more options.