The Knight of Weeks is a rare Legendary Creature — Human Knight card from Unknown Event (UNK), collector number RW06. Current market price: $21.98, TCGplayer market prices via Scryfall.
Lifelink, vigilance, first strike At the beginning of your combat step and whenever another Knight enters the battlefield under your control, put a day counter on The Knight of Weeks. The Knight of Weeks gets +7/+7 for every seven day counters on it.