Sometimes, when you fill a character's Heart, but you continue to positively interact with him/her (in the same day), the next Heart will start to fill (even though you haven't done the event of the previous filled Heart)
Unfortunately, the 3-star immersive cards are the rarest pull outside the Crown Rare cards, so this may take some time to complete, but given how many packs it may take to meet Mew's requirements, odds are you may have the others by the time you unlock that one
Example Decks Because Hand Control is a deck with verified results from a high level event, unlike Beatdown, we can look at some example decklists from the 2003 World Championships
It's hard to take advantage of the effect
21, headlined by a newly discovered 1909 T206 Honus Wagner
Fabricate never had much of an impact on Commander, but Cayth, Famed Mechanist puts it on full display, combining it with a repeatable way to populate Servos or proliferate +1/+1 counters