Dr. Strange, PhD. Supreme

When Dr. Strange, PhD. Supreme enters the battlefield create a Blue and White Legendary Artifact Equipment token named Book of the Vishanti.

Book of the Vishanti enters with {x}{x} sorcery counters on it.

Remove [x] number of Sorcery counters from Book of the Vishanti: counter target spell with converted mana cost [x]. Exile any spell countered by Dr. strange.