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Even if you have nothing in your deck that can cast things from your library, it's still a free dork that returns to your deck for more card drawing later
Nice synergy with card flow, token making, and creature shooting all happening in three abilities that are not the ultimate
Otherwise, jamming more draw is likely the best way to improve your deck
Then, I am considering Grave Titan, since it can easily send creatures to my opponents' graveyards, for me to steal, as well as generating tokens for me to sacrifice, so I have numerous options for that deck
This article is specifically on the crispin munkidori engine, as thats how Ive played the deck to success