Rogue Sphere

Trigger A creature within 60 feet casts a spell or uses magical effect, or a creature within 60 feet is the target of an active spell that's 5th level or higher, carries a magic item of 10th level or higher, or is the target of an ongoing magical effect created by a creature who's 10th level or higher --- Effect The sphere flies 30 feet toward the triggering creature. If the sphere would enter a creature's space, it stops moving in that creature's space, then attempts to counter the triggering magic effect (or alternately, the strongest magic effect on the creature), with a counteract modifier of +28. A counteracted magic item becomes a mundane item of its type for 10 minutes. If the target is a creature, or is a creature who's carrying the targeted item, the creature takes 10d6 force damage from this effect (DC 36 fortitude save). The rogue sphere then rolls initiative.