A card like Korvold, Fae-Cursed King is a great reason to build a deck around sacrificing permanents, because each time you sacrifice something, youll draw a card and buff Korvold
It offers a full wheel with graveyards and hands shuffling into the deck for just 3 mana, but the caveat is that it ends your turn on resolution
Finally, Collected Company is a great tool to round up the deck, as it's a 4-CMC instant that allows you to look at the top 6 cards of your deck and put up to two creatures with mana value 3 or less onto the battlefield for free
It's worth considering, though
There are even some Commander decks that will synergize well with PuPu UFO, such as The Wandering MinstrelThe Wandering Minstrel
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