The Knight of Weeks (Unknown Event #RW06)

The Knight of Weeks {W}

Legendary Creature — Human Knight

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.

A

1/1
Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny