A melee item (probably T3 or T4) that can steal or swap buffs/debuffs when it connects with an enemy hero with a heavy melee. As an example, lets say I'm Abrams and I have an Infernus on my team. Infernus procs afterburn on an enemy Wraith that just cast full auto. If I heavy melee that Wraith, I gain her full auto, but also her afterburn so I get dealt damage.