LovingFate wrote:

thanks for the link hugomka but it doesnt really explain much about what it actualy is for and y u get it

Not completely sure what you're asking, but:
You get it because you help that 'Goddess' do something, and so you're rewarded with a spell that summons her help based on your element. The spells are useful, and commonly they're used for burst training to get a ton of exp.

And say the guide says:

Hot Fire: 3x The damage of the person who get buffed
Buff skill
Uses 82 SP

Shrink (also known as Drain Water): Lower the enemy Atk, Matk, Def, Mdef Debuff skill
Uses 52 SP

Blockage: Prevent the enemy to use support skills I believed
Debuff skill
Uses 60 SP

Vanish: Wind-style Stone Wall. Act like Stone Wall of the Earth skill
Buff Skill
Uses 109 SP