That is the proper spelling (uncapitalized) of the word magician.
That is the correct spelling of the word "off". There is also the word "of" with only one "f" and it does not mean the same thing.
I-N-V-I-S-I-B-L-E
The class that you equip will change your "spells." For example, if you equip Mage you'll have Fireball, Ice Shard, Explosion, and Arcane Shield. But if you equip Healer, you'll have Healing Word,...
go to any shop and click on inventory, and then on spells, then select a spell, and click on sell