Let's start with the top of the color wheel in White, with everyone's favorite Praetor, Elesh Norn, Mother of Machines
Exeggutor is my favorite
Theres only one Hamster card in Bloomburrows main set and its in white, so you wont be running it in this deck
(Create an Incubator token with X +1/+1 counters on it and " : Transform this token." It transforms into a 0/0 Phyrexian artifact creature.) Creature - Phyrexian Shark Color tag templates(None) Company Commander Command Section When this creature enters, create a number of 1/1 white Soldier creature tokens equal to the number of opponents you have
That line is pretty fuzzy, so its reasonable to think that the card could also be setting the mark in the other direction, and there might be some compelling arguments for it
Craft requires you to choose some permanents, but exiling the card and materials is part of the cost to craft and flip the card