Elemental Gathering Realm

A person can control many elements and have great flexibility during combat. If they can cultivate to the high realm with many elements then their firepower will not be less than someone specializing in a single element.

The only downside is that it takes a lot of time to comprehend and absorb so two or more elements. Time is of paramount importance for every cultivator. 

Powerful clans and sects may be able to train some disciples with more than one element with the help of resources, speeding up their cultivation. Rogue and normal or even some elite cultivators only focuses on a single element in their whole lifetime.

The next major realm that comes after the Dantian Formation Realm is called an Elemental gathering Realm or Essence gathering Realm or even just the Elemental Realm. All these terms are used in different parts of the world.