Blue Death (5e Spell)
From D&D Wiki
|Casting time:||1 action|
Make a creature of your choice within range to perceive themselves in a life threatening situation. This creature rolls an intelligence saving throw with a DC of 12 + caster's INT modifier, If they fail then they are made to believe they died and take 2d6 mental damage, for the next 2 turns they have a disadvantage on INT and WIS rolls.
At Higher Levels. At Mage level 6, you can cast this spell towards 2 enemies. At Mage level 12, you can cast towards 3 enemies.
For information on class go to https://www.dandwiki.com/wiki/Mage,_5E