0 Mana Spell
Spend all your Mana. Destroy a minion with that much Attack or less.
Very flexible card like the old Forbidden cards before. This will usually go equal in terms of mana depending on what you destroy, sometimes you need to spend 1 extra mana. This also has to be the last card you play on the turn since it spends all of your mana, although I don't think that'll be much of an issue. I think its might be ok enough to run, as it compared pretty good against Shadow Word: Pain. I can see Death and Words being run together in a control deck, although we'll have to see if control priest becomes a thing after the rotation.