Because of this, magicians often spend many of their learning years wandering the world in search of such ancient tomes. However, as with most ciphers and puzzles, these can eventually be broken, especially by those with the foreknowledge of what to expect and look for. The spells they inscribe are usually written in code, if they are preserved at all. It also doesn't help that practitioners of magic are often seclusive and secretive, either because they don't want this power to fall into the wrong hands, or because they simply don't want to share it with anyone at all. Other disciplines shape and focus their power differently, and thus have to be studied separately, even if the most basic rules remain the same. It is also limited to the universal school of magic, the Arcane.
And that's not really enough either, as it allows only the understanding, not necessarily the invention of new spells.
Even for the most talented, it takes years to master even their basics. Much like the laws of physics in our own universe, the rules that govern spellcasting on the worlds of Arcanus and Myrror are complex, and elaborate.
