Conjure Voidborn

7th-level Void Magic   Casting time: 1 action   Range: 90 feet   Target:   Components: V, S   Duration: Concentration, up to 1 hour   Classes: Wizard   Subclasses:  
You summon a fiend or aberration of challenge rating 6 or lower, which appears in an unoccupied space that you can see within range. The creature disappears when it drops to 0 hit points or when the spell ends.   Roll initiative for the creature, which takes its own turns. It attacks the nearest creature on its turn. At the start of the fiend's turn, you can use your reaction to command the creature by speaking in Void Speech. It obeys your verbal command, and you take 2d6 psychic