Each of the following 3 groups is used in its own way in combat.
Below we've linked you to three threads where you will be required to post all spells your wanting to build that fall into that group of magic.
Also a list of spells will be provided for you to pick from on each thread if you don't want to do the hard work of building your own.

A Buso Renkin is any type of attack that does damage. Each attack most have a base power or damage it does when it hits.

Totem's Are your shield's. Used mostly to buff down magic attack's they can be used to stop weapons attacks. Shields for the most part stay active once used. Each shield normally has set amount of damage it can buff before braking. Any damage the shield couldn't stop still hits the target.

Summon's / Boosters Are some of the best magic's you'll find. Able to do a vast amount of different things. Some can summon monsters or animals to help you fight while others increase the amount of damage your able to do or buff using shields or deal with a spell.

Some once learned never turn off others can be used on others to help them. The list of different things you can do is amazing. How ever these type of magic is also the hardest to use.

Summons also have a very different way of working. They have a life force that once gone means they brake and are removed for the battle field.

This type of magi also hold Gates which are the most powerful form of magic one can use. Imagine summoning forth the god of an element to aid you in combat!