Shirei, Shizo's Caretaker makes it so that your weakest fodder keeps coming back consistently
(Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.) : Target opponent whose turn it is puts target nonlegendary creature card from your graveyard onto the battlefield under their control
When you play Chivalrous Chevalier, you have to either bounce a creature back to your hand, or you have to compliment an opponent, which is just nice
Add to that the fact that Leovold was banned in EDH and therefore for the set to maintain even its current value, something else will have to grow and some of the cards are taking a lot longer than expected to move at all, or even become adopted (Im looking at you, Regal Behemoth)
Whether you are accumulating basic Common cards or pursuing ultra-rare Secret Rares , you will confront this standard size all over the hobby
Delirium Whenever Fear of Missing Out attacks for the first time each turn, if there re four or more card types among cards in your graveyard, untap target creature