Mystical Tutor [Signature Spellbook: Jace] Oath of the Gatewatch Promos It has "This creature's power

It has "This creature's power and toughness are each equal to the number of experience counters you have

Summoned from the dreamrealms

Set: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {U} Change the target of target spell with a single target unless that spell's controller pays {2}

Set: Planechase Anthology Planes Type: Plane — Serra’s Realm Common Cost: When you planeswalk away from Sanctum of Serra

Mystical Tutor [Signature Spellbook: Jace] Oath of the Gatewatch Promos It has "This creature's powerSet: Signature Spellbook: Jace Type: Instant Rare Cost: {U} Search your library for an instant or sorcery card and reveal that card. Shuffle your library, then put the card on top of it. "It's not just what you know. It's knowing where to find what you don't."