You summon two spectral knights which hover nearby, ghostly swords drawn and ready for battle. For the duration of the spell, you can use a bonus action on your turn to command any number of the knights to attack a target within 5 feet of you. Make a melee spell attack for each attacking knight, dealing 3d8 force damage on a hit. Once a knight has successfully hit with an attack, it fades from existence. In addition, whenever you become the target of an attack, you can use your reaction to cause your knights to summon ghostly shields, protecting you from harm and granting you a bonus to AC against the triggering attack equal to the number of knights remaining. When you do so, one of the summoned knights fades from existence immediately after the attack. When the last summoned knight disappears, the spell automatically ends.
At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the number of knights you summon increases by one for every slot level above 4th.
You can cast this spell using your reaction whenever a creature fails a saving throw against another spell you cast. The presence of your magic twists the target’s mind, producing insidious horrors which tear at their consciousness. In addition to the normal effects of the spell, the target must make an Intelligence saving throw. On a failed save, the target takes 6d6 psychic damage, or half as much damage on a success. If this damage reduces the target to 0 hit points, they immediately die, and their body turns to ash.
At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for every slot level above 5th.