Collin's greatest trick

A spell created by the young elven Wizard Collin Evans. This spell causes everyone but the caster to experience illusions of their worsts fears. These illusions affect all of the sense but cannot harm the one under the affects of the illusion.

Those who are affected by the spell will experience full sensory illusions of their greatest fear. So if someone has claustrophobia they will experience a full sensory illusion of being trapped in a box that is slowly getting smaller. Or if they have arachnophobia they will experience spiders crawling all over them.

While under this spell if the caster or anyone else attacks someone under the illusions they will roll with advantage because the person under the spell is completely unaware of anything outside the illusion.

The spell can only be cast once and the caster will need to take a long rest before able to cast again. 

Those who about to be put under the spell will have to make a intelligence saving throw if they don't roll higher than a 18 they will be put under the affects of the spell.

Collin claims he created the spell as a non-violent yet successful means of getting away from large groups of enemies. For instance, you're being chased by a bunch of royal soldiers. Just cast this spell to stop them in their tracks they won't be able to do anything for an hour allowing for you to get away without causing harm. He soon realized that someone could just kill those people while they were in the illusions and instantly began to regret the spell.