A shape materialized in the doorway and ran toward the boats.
From the doorway of a little bedroom, a cloaked shape materialized.
First the shape and then the substance of Bractor materialized.
As he watched, a shape materialized in the glow.
She watched the dark shapes materialize silently from the trees by the bank.
A black shape materialized out of the snow, slipping and sliding as it ran toward them.
As Bill watched, a wraithlike shape materialized in front of him.
A black shape materialized in the open space above the door.
Behind, the remaining two riders came at him, dark shapes materializing out of the mist.
An arrogant, aristocratic shape materialized on the bank of the river.