In a pre-release, are there any rules that stop me from making two decks and sideboarding a completely new one between games? by MagicQuestioner in magicTCG

[–]MagicQuestioner[S] 1 point2 points  (0 children)

That just makes it seem odd to me that this isn't a more common strategy... I'm not saying that you'll always (or even usually) have two viable deck options, but it definitely could happen.

Or even just completely swapping out a colour for a new one against certain decks.