Worst card in Magic

[b4r0n]

It may have been mentioned by now, forget reading six pages of this garbage, but the worst card cannot possibly be a creature. By definition, they are more useful than their equivalent awfulness of lands or enchantments, simply by being a threat (note: you can be an 0/1 wall, and still potentially be a threat).

I agree with the sentiment that creatures can't be the worst cards in Magic because they're capable of winning the game by themselves. However, if you're claiming that a 0/1 Wall is a potential threat, then so is Cathedral of Serra (with a Barbed Field) or Arcum's Weathervane (with an Animate Artifact).

I'm surprised nobody has mentioned Mudhole yet. Not being a permanent gives it a big one-down on most of the cards suggested here because of the various synergies those cards get by virtue of being in play.

Mudhole is actually useful against some playable cards: Life from the Loam, Terravore, and Knight of the Reliquary, to name a few. And it's even an instant!