The card doesn't specify how much food you need to eat either, so if you really don't want to indulge in something bigger, you can eat a single M&M and call it a day (bonus points if that one M&M is either red or green)
When the game was first released, this was a grueling task, as every Pokmon, regardless of its HP total, was only worth one prize card
That means +1/+1 counters, auras or equipment stay right where they were post-morph
6 CMC is a bit high but I am almost always happy to have one or two 6-drops at the top end of my deck, and a flying 4/4 can easily close out games
Like most Magic: The Gathering cards, the value of Roxi, Publicist to the Stars depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Unfinity)