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)
[spoiler=Pre-Pendulum version] When a Monster is Special Summoned from the Extra Deck: banish 1 card from your hand face-down
Commander decks contain 99 cards in the library the commander itself occupies the command zone and is not part of the drawable population
You won't look at any cards from your library as Memory Deluge resolves
If you're in need of some ramp, this card can also be used to steal lands from your opponents' decks.
Since its colorless it can make any Commander Deck no matter its color identity or lack thereof, and it fits into equipment decks as well