Can someone please define for me this oft heard phrase?

A card that is so good, it makes virtually all of your tournmaent decks. e.g - your House's Fury Plot, Val, Narrow Escape, Valar

Stag has the right of it, but keep in mind an auto-include doesn't necessarily mean the card is unbalanced, overpowered, bad for the game, etc. Although, unbalanced, overpowered cards often do become auto-includes since they can be exploited.

~Normally a pejorative term used by Competitive Shagga's to describe cards they are tired of playing against but include in their decks anyway. See the Restricted List for the most recent "egregious" examples.

kpmccoy21 said:

~Hey, we are tired of playing WITH them as well as AGAINST them Although I am excited to be able to pick 7 plots and 3-6 more cards for each deck (okay, mabye the 4/8/2 is now my only real auto-include...)

I think the answer to your question is "The Blackfish"