Tendril of the Old Ones

You call upon a long, otherworldly tentacle that bursts forth from your palm and lashes out at your command toward a creature you can see within range before vanishing. This tendril passes through solid objects, instead attacking a creature's mind. Make a melee spell attack against the target. If the attack hits, the creature takes 1d10 psychic damage.

This spell ignores half and three-quarters cover.

The spell's damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).