It isn't just his deck list we really need, but those he is beating. I think he has been pretty clear that his deck is destroying those he plays against with much too high a frequency to just discount his experience... but when attempted by more than competent players in other metas the same results are not seen.
That prety much leaves four reasons,
1) Lars' deck is superior to our own, providing a deck list will allow us to see exactly where his deck differs and we can better evaluate the strength of MWnK out of this deck.
2) Lars' plays his deck differently (and possibly in a superior manner in so far as maximizing MWnK potential), providing a game report, turn-by-turn would help discover how his decisions are crippling his opponents decks.
3) Lars' opponents decks are ripe for exploitation, providing a decklist will allow us to find these holes and point out ways of improving that reduce MWnK's strength.
4) Lars' opponents are not playing their decks to their full potential, providing a game report, turn-by-turn would help discover how his decisions are leading to his domination by Lars' deck.
In short what we really need I thik is a turn-by-turn report of a game with both decklists to see what is happening... and even then a single game is not proof of a problem but would be a large step forward in this discussion. Has anyone taken you up your game by IM challenge? Could we get both of you to post your logs and deck lists?
I absolutely agree that perma-steal is incredibly strong, needs to be handled carefully, and should be very expensive or situational... that said I still don't see this deck type ruling the roost, and don't see this card as being so enabling to require errata.
Lars, thanks for a very enjoyable game.