What To Do With Spells? (Patreon)

Hello all. I am spending this upcoming week writing spells for Deathbringer and I am at another crossroads: should I use traditional spells/spell names or create my own?

Using traditional "magic missile" and "fireball" language sends the message this is a traditional D&D game. Familiarity sells and everyone knows what those spells do. On the other hand...

Having original spells--especially ones that sound more horrific--can give the game its own  flavor. 

Please share your thoughts!