The Knight of Weeks [Unknown Event] Teferi and it can't be sacrificed

and it can't be sacrificed this turn

The library's scrolls have long since crumbled into swirling desert sands

({R/G} can be paid with either {R} or {G}

Set: Legions Type: Creature — Sliver Rarity: Rare Cost: {3}{W} Whenever a Sliver deals damage

The Knight of Weeks [Unknown Event] Teferi and it can't be sacrificedSet: Unknown Event Type: Legendary Creature Human Knight Rarity: Rare Cost: {W} 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