Apparently, every one of them believes it is the most important.
Oh, and did I mention that if you draw three cards, lose two cards, and have a Psychatog on the table, you've just grown your 'Tog by +6/+6 (two cards in graveyard + Fact or Fiction + 3 cards in hand -- discard the three cards to have six in the grave, remove all six to give another +3/+3)
In the 00s my brother, cousins, and I played as much Magic: The Gathering as the next tween
Ignition Priority has also been removed, changing the evaluation of cards that used to be susceptible to priority such as Bottomless Trap Hole, and those who used to be able to abuse priority, like Judgment Dragon
Little surprise, then, that even the standard version of Belle, Strange but Special became one of The First Chapters most sought-after cards shortly after its release
Prizefighter Construct: Limited