help creating spell

I am looking to make something like enspell from Final Fantasy series. any suggestions?

What's Enspell?

And knowing what engine you are working with will likely help here as well, in case scripts or plugins are needed.

You have to better define what effect you mean, cause the en-element effects arent consistent between the games. in some, they just change physical attack damage to the respective element (which can be done with the attack element trait) while in others it adds separate instances of damage onto physical damage or increases the base power of the physical hit based on the weakness the enemy has towards the corresponding element (both of which needs a plugin)

we will say enfire. and im working with MZ

yes I want the second to add extra elemental damage.

then you can use either Turan's eval tags or Visustella's battle core plugin to make the effect. Yanfly had a tips and tricks entry for it made years ago. you should be able to copy-paste the code itself and change the notetag used to a relevant one for either plugin you choose

EnFire (MV Plugin Tips & Tricks) - Yanfly.moe Wiki

I tried Yanfly's but it didn't work I will try looking at Turan's thanks you.

Yanfly's plugins are meant for be ran on MV. the usual assumption if youre trying to run them in MZ is that they most likely wont work. Visustella plugins are the collection for MZ and contains many ports for the Yanfly plugin features

Moved to Plugin Support

Also regardless always explain how the spell should work in your opinion. We have had issues in the past with interpretations of implementations due to people having two different interpretations of things. Just saying like x game is not enough to get proper assistance.