Return a creature you control to its owner's hand, then destroy all creatures
My opponents are less than pleased
It also managed to print several cards from the Reserved List in a unique move that ultimately saw the policies surrounding the List change
These are at their best in midrange and control decks that dont mind taking the first turn or two off to develop their mana
Stoneforge Mystic no longer finds Colossus Hammer (or anything else), Archon of Cruelty is just a big flier and no longer wins the game for Creativity decks, Primeval Titan cant tutor up lands and gets blocked by Elesh Norn, Mother of Machines for days, Omnaths landfall ability doesnt trigger - the list of popular decks and cards that Elesh Norn stops is surprisingly long
The Voidwalker also works greatly with the likes of Inquisition of Kozilek and Thoughtseize, where you can take an opponents key spell and later use it against them