Knowledge counter

Knowledge counters are a type of counter introduced in the Throne of Eldraine. They act as an upkeep tracker for the player drawing more cards each turn.
==Description==
Knowledge counters first appeared on <c>The Magic Mirror</c> in Throne of Eldraine. It is a Legendary Artifact which gains a Knowledge counter each upkeep. Alongside that, for each counter on it, the player may draw a card. The artifact also makes it so the player has no maximum hand size to counteract many cards being drawn each turn. The counters thematically represent the player gaining knowledge via the Magic Mirror.