Well, it kinda went like this:
The PCs were facing up against an Earth Elemental Scion Enforcer who had engulfed one of their teammates with the intent of using her as a bullet shield (shoot his center of mass as you're trained to do and she gets hurt). The warden, being an earth mage, performs a maneuver on the Scion that makes him temporarily Brittle. The Scion takes his action to remove the tag, diving for the air vent and leaving the engulfed teammate behind on the floor underneath the vent.
The wizard then goes to check on his semi-conscious and retching ally and fails the Alertness roll, getting an Average, failing to notice the tendril snaking out of the vent.
After the Stealth roll, the Scion, who has a number of psychological issues, attacks, getting a natural +4 roll, has a high Fists and invokes every single aspect and temporary aspect he can, dumping over a third of the fate points he had accumulated through the scenario into a single attack at the single greatest threat on the field, both to his physical well being and to his mental heath (almost clinically insane and with a personality that can best be described as a bullying sadist with personal validation issues).
As it was an ambush, the PC could only defend with a straight die roll... and rolled poorly. So the tendril grew a claw and laid open the wizard's face from jawline to hairline.
They ended up killing the Scion... they hope. The issue of how exactly you take vital signs on an animate lump of clay was something of a barrier to confirmation. Also, the bulk of the "body" was in the air vent, making examination difficult.
As for the wizard, the aspect he's chosen makes me pleased; it means that he's becoming Not So Different from his dad, the mob boss, and that has all sorts of potentialities for the future...
EDIT: I've thrown up the
Scion's stats over on the Spare Character Concepts thread.