Element

Elemental damage plays a significant role in Soul's Remnant Online, from halving damage to potentially quadrupling damage. You, the player, are considered Normal element by default. By using one the Elemental Charge skills, both your element and your Normal element skills change to the charge's for the skill's duration. While a charge is active, the player will also be surrounded by its particle effect, and attacks that have had their element changed will apply a special hit effect.

For example:
Let's say that player A likes to use Frost, and player B likes to use Ninja Throw. They end up fighting Monoghouls, a Ghost element monster. Because Ninja Throw is Normal element, player B will only deal 75% damage to them. Meanwhile Frost, being an Ice element skill, will deal 150% damage to them.

If player A uses Ice Charge, the Monoghouls will now deal only 50% damage of their original damage to player A. If player B uses Ice Charge, not only will the Monoghouls deal 50% damage to player B, but their Ninja Throw will be changed into ice Element as well, and go from dealing 75% damage to the Monoghouls to dealing 150% damage.

After fighting Monoghouls, they decide to go to the Desert and kill Blazes, a Fire element monster. Using Ice Charge against Blazes is a bad idea, as this means the Blazes would deal 150% damage to player A and player B while Ice Charge is active. Knowing this, they both got Water Charge beforehand.

When player B uses Water Charge, the Blazes now deal only 50% damage to them while their Ninja Throw is changed to Water element and deal 150% damage to the Blazes.

When player A uses Water Charge, they may take 50% damage but their Frost, an Ice element skill, is unaffected by Water Charge. This means player A still deals 50% damage to the Blazes with their Frost, even while Water Charge is active.

Additional Effect

Elemental charges also have a chance to apply additional effects:
Fire can apply a Damage Over Time effect
Ice
Ghost
Metal
Lightning
Water