2nd-level Spell: Bind Minor Fiend

Dream Magic (Conjuration)

You chant a vile spell, conjuring up a single fiend to serve you. The spell conjures one 2nd-Name Sword which uses the Fiendish Scout stat block below, and you select either the Imp, Quasit, or Vargouille option when you cast the spell. In combat, the Sword shares your initiative count but takes its turns immediately after yours. It can't be dismissed and lasts for 1 hour after its summoning. It disappears when reduced to 0 hit points.
The Sword is an ally to you and your companions and hostile to all other creatures. If you lose concentration on the spell, it does not disappear. Instead, it becomes hostile toward you and your companions.

• At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, certain values increase in its stat block.

Source: SMS (Bind Lesser Fiend)

• Casting Time: 1 action
• Range: 60 feet
• Components: V, S, M (a blasphemous statuette of a fiend, worth at least 200gp)
• Duration: Concentration, up to 1 hour
• Ritual: No

Touch of Darkness:

• You receive the Tainted condition every time you cast this spell.

Branded

A creature who has summoned a Sword or Pentacle is branded by an infernal rune on a prominent part of their body, such as their head, chest, or back. This rune marks them as someone who has summoned a Sword or Pentacle. Communities and individuals who recognize the meaning of the rune may treat the summoner with fear, suspicion, or contempt.