Orc Stone
Wondrous Item ◆ Uncommon (requires attunement by a recipient only)
I saved the life of an orc, who gave me a stone with the symbol of the Many-Arrows tribe (a humanoid skull pierced by three arrows) carved into it. The stone is an uncommon magic item that requires attunement, and only I can attune to it.
As an action, I can use the stone to summon the spirit of an orc warrior, which appears within 30 feet of me. The spirit uses the orc war chief stat block in the Monster Manual and disappears after 10 minutes or when reduced to 0 hit points. The spirit understands any language I speak and obeys my commands.
After the stone is used three times, it turns to dust. (See Appendix B of Icewind Dale: Rime of the Frostmaiden)