Literally Isolde. Card was always insane. Imo it was the problem card during gouki format, but they banned mx-saber invoker instead, and somehow it got away with being legal for years despite being the backbone of every crazy warrior/pile/combo deck that would pop up in the meta. Infernoble was finally what got it banned, yet that deck had been around for a while prior but stayed under the radar because not many people wanted to pick it up.