Even back in the days of Card not found, The Deck, the original blue-white control deck (although it did splash for both black Card not found and red Card not found, in the main deck) had one Tome in the main and another in the sideboard (it also had one Card not found and one Card not found in the main, giving the deck multiple subtly different ways to outdraw the opponent)
Archived (PDF) from the original on June 16, 2022
The lifegain also adds up quickly
In any era prior to the present, these would be the titans
Dont overlook this as an inclusion in Standard decks, though, to disrupt color-intensive mana bases, kill a creature land, or get rid of Mirrex
This SIR is also stunning, featuring a stained-glass collage of not just Mega Gardevoir, but the entire evolution line