Summon Fiend

level 6 - conjuration

Casting Time: 1 action

Range: 90 feet

Components: V, S, M (humanoid blood inside a ruby vial worth at least 600 gp)

Duration: Concentration, up to 1 hour

Description not available (not OGL).
But here is a summary:

Summon 1 fiendish spirit (demon, devil, or yugoloth), friendly (stat block/your lvl).

Warlock

Wizard

Tasha´s Cauldron of Everything