Hitting max speed with the Assembler is neat and can fuel the Walker since it makes more tokens once it dies
The Sumerian Talisman is a perfect addition to those combative decks that want to challenge as much as possible, as itll reward you with instant, no limits card draw whenever you trade one of your characters with one of your opponents
It also achieves the feeling of your creatures helping others out in their party
That said, Bonehoard Dracosaur is insane value if you can keep it alive, so at the very least you know this goes in one of your EDH decks
If you just want the cards, a less good effect at instant speed is likely better
While I believe some people have unrealistic expectations on how cheap Magic should be (and we'll talk more about this later), I 100% agree that Magic is too expensive and have dedicated a lot of time and effort to fighting for more and better reprints and the end of the Reserved List