It seems like thematically, there could be a very fine line between using magic to maneuver (I.E. tearing up the ground, or knocking someone down) and using magic to place an aspect on something (I.E. entangling vines, driving winds or pinning someone against a wall).
I still feel that targeting a single person with the Evocation Maneuver means the Aspect could be made sticky.
I'm wondering the refined difference is whether or not a given Evocation-based Scene Aspect can be considered fair game for any combatant to Invoke, or solely for the caster. Let's take a Combat Example:
Wizard versus Troll.
Exchange 1: Wizard casts an Earth Evocation Maneuver to place the sticky "Broken Ground" aspect on the scene.
Exchange 2: Wizard casts an Earth Evocation Attack at the Troll, tagging the "Broken Ground" aspect for a +2, explaining that the Troll is having trouble keeping its footing and stumbles around a little. Troll responds, performing a Maneuver to place the Blinded Aspect on the Wizard, using a Fate Point to tag "Broken Ground" for a +2 to the roll, explaining that it kicks a big quantity of the now-loose earth at the Wizard's face.
Now, let's look at the same combat, with a different Earth Evocation Maneuver.
Exchange 1: Wizard casts an Earth Evocation Maneuver to place the sticky "Grasping Fists of Stone" aspect on the scene.
Exchange 2: Wizard casts an Earth Evocation Attack at the Troll, tagging the "Grasping Fists of Stone" aspect for a +2, explaining that the very ground is attempting to hinder the Troll's efforts to avoid the attack.
Can the Troll feasibly spend a Fate Point to use the Aspect "Grasping Fists of Stone" in a way that would benefit his counterattack against the Wizard?