eidetic memory

Fortunately, Baan had an eidetic memory, allowing him to maneuver blindly through any location he had ever seen. For a time, Baan did everything he could to make his trail from home fairly obvious, so that any Planeswalker from Ravnica with half a brain would believe he was still in hiding on Kaladesh. Then Baan did everything he could to make following his trail next to impossible, so few would guess he had eventually planeswalked away.

***

War of the Spark: Forsaken, Chapter 31