This answer provides examples of situations where having a larger deck might not be a strict disadvantage
Card Text: Vigilance Creatures you control have ": Add one mana of any color." When Enduring Vitality dies, if it was a creature, return it to the battlefield under its owner's control
Decklist The decklist contains one planeswalker, 36 creatures, six sorceries, five instants, 11 artifacts, six enchantments, and 34 lands
Magda, Brazen Outlaw Magda, Brazen Outlaw is another card where the tutor effect is secondary to the rest of the card
Older foils, in particular, can be surprisingly expensive because they can be significantly rarer than modern foils
This card allows you to go large and tall