The Magic Mirror 51/269 (Throne of Eldraine)

This spell costs {1} less to cast for each instant and sorcery card in your graveyard. You have no maximum hand size. At the beginning of your upkeep, put a knowledge counter on The Magic Mirror, then draw a card for each knowledge counter on The Magic Mirror.

NM - $7.10
LP - $5.70
MP - $4.30
HP - $2.90
DMG - $2.20