If this saw print, in 1v1 this versus Naturalise would be a format-specific call. If you care about killing Planeswalkers significantly more than you care about killing artifact creatures, you use this, otherwise you use Naturalise.
This was partially inspired by the difficulty of killing planeswalkers in multiplayer formats - there just aren't many simple ways of just making them go away. It's very frustrating getting wrecked by Ajani or whatever while sitting with a hand full of ways of dealing with normal problem permanents (Naturalise, Nantuko Vigilante, etc.). Artifact creatures are less of a worry because they are still creatures, so have plenty of ways of getting caught in the usual multiplayer crossfire, but there really aren't that many ways of just killing a planeswalker. I'd certainly use this over Naturalise in some of my multiplayer decks
