Create Leaf Litter

You summon a smattering of invisible leaves and twigs at a point on the ground you can see within 60ft. This leaf litter remains stationary in a 20ft square even if wind or other forces would threaten to move it. When a creature enters the square for the first time including when this spell is cast you immediately learn its position and direction of movement and the creature can derive no benefit from invisibility. In addition, any shapechanger who enters the area leaves tracks in the shape of their true form (a dragon in human form would, for instance, leave a claw print where you might expect human-sized tracks). Learning this information requires an action spent in contact with the leaf litter, during which time the tracks illuminate themselves to only you. A creature who is looking for the leaf litter can perceive it faintly by succeeding an Intelligence(Investigation) check against your spell save DC.