I feel like turning from Father Mateo into William Yorick will be extremely funny. Not only can you use Yorick's ability to infinitely pull your Codex and thus be able to recur anything in your graveyard instead of merely being limited to assets, but it lets Yorick wield some pretty good high end weapons.
Blessed Blade(4), Holy Spear, etc!
I do also find the idea of Daisy Walker turning herself into Mandy Thompson to be pretty humorous. Finally, pre-taboo 30 card Mandy is back! (with slightly different deckbuilding requirements, and no signatures, but hey.)