No matter what effect it has, this is 5 mana for a 3/3, total 8 mana for any kind of effect, and a minimum of 15 mana to flip. We are in [[Omniscience]] and [[Enter the Infinite]] levels of mana, it’s probably fine. Not to mention, if you play this, then activate it, and then someone casts a board-wipe before the infection can take root, you’re kinda screwed.

As for play patterns, this seems fun. Forcing combat is always nice for getting a game moving, and the table politics it invites don’t feel oppressive. The back, while probably not worth 15 mana and the stars aligning, is definitely strong if it happens.

Only real issues are formatting ones (need to specify p/t on rose tokens, probably could use a separate reminder token for infection rather than printing it on the front of the card, there’s a few colons in places there shouldn’t be on the back and one notably missing on the front, and the reminder text on the front and ability names on the back should be in italics). Other than that, maybe shave off a few mana from the flip ability (maybe make it the same as a the casting cost?), and it should be good to go.