1996 May 6, IHorizons [username], “Re: Mana Shuffling 'Cheating or Not?'”, in rec.games.trading-cards.magic.strategy[1] (Usenet):
Once my opponents see that I actually shuffle the deck after the mana shuffle I will almost never have a problem.
1996 September 13, Garry O'Connorg, “New Floor Rules Cheating and shuffleing”, in rec.games.trading-cards.magic.misc[2] (Usenet):
Now I can be kicked out of at tourney because of a mana shuffle?
2000 December 12, Erich Leibrock, “Re: Shuffeling?”, in rec.games.trading-cards.magic.rules[3] (Usenet):
Actually, GreatLich, there ARE tournament rules for shuffling... If I remember right, they don't care if you do a mana shuffle, but the last three times (I think it is) half to be the kind of shuffling you do with playing cards... you know, one stack in each hand, and alternating bits from each stack falling.. I think it's called a "riffle shuffle"... look it up onWOTC's page :-)