Multi-classing is the mixing of two classes together into one character. There are only five classes in Elemental D6, but there are still options for mixing these classes. Persons with the ability to manipulate more than one element are less common. Mixing the martial class with one of the four elemental classes is more common

When mixing two classes you would take a second class when leveling up. Your GM may require some event in your character's adventure's to unlock that skill if it is a second element, though no such event is required to mix the martial class with another element

When taking a level in another class, you take the level bonuses, skill bonuses, and talent points according to the level in your new class, starting at level one. You do not get additional bonuses associated with starting a character, your first level in a new class is treated as any other level in that regard

Example
You have 4 levels in hydromancer and you level up to level 5. Instead of becoming a level 5 hydromancer, you put the level into the martial class. You gain the bonuses associated with the first level of the martial class, instead of the hydromancer class). You do not gain the hit points associated with level 1 characters of your race

Level Requirements
If a any talent, skill, or feat has a level requirement, use your total character level for this requirement

Restrictions

• You cannot take more than 20 levels in a base class
• After level 20, you no longer gain BAB\BDB bonuses granted by taking levels in a base class
• You can however, take more than 20 levels in a base class, treating it as if it were a new class. You may only do this once you have finished 20 levels in the class you wish to repeat. Talent points acquired in one instance of a base class cannot be spent in another class, even if the other class is the same class, but repeated

Aside from the mechanics from leveling, characters can also manipulate the elements in smaller or creative ways, such as heating a cup of tea with flame, wafting the scent of a flower towards another creature, or freezing up some ice cubes for their beverage

When a character gains a new element from multiclassing, they do not have access to complete manipulation over the element until they select talents which grant mastery over various elements. A fresh hydromancer cannot create ice until they take one of the ice related talents. A fresh aeromancer cannot control currents of air if their only talents are Powerful Ki and Quick Mind

In general, a blast grants general control over the elements. Beyond that GM discretion should be exercised and should err on the side of restriction of access to the new element