Be cool to see a champion based around debuff zoning
The basic idea is a champion designed to split up the enemy team during team-fights. Abilities would be cast on an opponent, who would then project an AOE debuff that effects their teammates. If their teammates "stand in fire", they get a debuff depending on the original cast (could be a slow, dot, armor/mr reduction, etc). Think for a support, comes more into play after laning phase.