Deathly Image

You create a foul image of an undead creature in an unoccupied space within range. The image is accompanied by simple groans of no consequential volume. The image can be that of a skeleton or a zombie, and it stays in one spot for one minute or until dispelled with an action. 

In order to see through the illusion, someone must make an Intelligence check against your Spell Save DC. If they succeed, they know the illusion is false.