Knight of Valor is a common Creature — Human Knight card from Visions (VIS), collector number 11. Current market price: $0.18, TCGplayer market prices via Scryfall.
Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.) {1}{W}: Each creature without flanking blocking this creature gets -1/-1 until end of turn. Activate only once each turn.