"There are a total of five [Tiers] to magic.
The first three are classified as;
• Basic [Tier-1]
• Intermediate [Tier-2]
• Advanced [Tier-3]
Then the next two [Tiers] are;
• Limit breaker [Tier-4]
• Overdrive [Tier-5]
Every elemental [Tier] has three [Common] spells. These are common for every newbie, though the destructive power behind them might vary with experience and the mana input.
These spells are activated by 'circle evocation method.'
This method requires you to channel your mana to create a circle. To successfully perform an 'emission,' different circles needed to be created.
By now, if you are following up with the class, you should understand that the techniques mentioned previously are supporting each other as the process continues.
There are no actual limit to the circles manifested, but do note that the burden on your mind, mana veins, and mana core will increase accordingly.