Lavinia of the Tenth is a rare Legendary Creature — Human Soldier card from Ravnica: Clue Edition (CLU), collector number 199. Current market price: $0.32, TCGplayer market prices via Scryfall.
Protection from red When Lavinia enters, detain each nonland permanent your opponents control with mana value 4 or less. (Until your next turn, those permanents can't attack or block and their activated abilities can't be activated.)