Sophina, Spearsage Deserter is a rare Legendary Creature — Human Soldier card from Universes Within (SLX), collector number 7. Current market price: $0.37, TCGplayer market prices via Scryfall.
Menace Whenever Sophina, Spearsage Deserter attacks, investigate once for each nontoken attacking creature. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") Partner—Friends forever (You can have two commanders if both have this ability.)