Theres still a lot going on here with two Vesuvan Doppelganger (PL, LP), a Forcefield (PL), an Armaggeddon (EX) and a Jayemdae Tome (PO)
If you like legends, but you also like to do Aristocrats things and mayyyybe some combos, as a treat
You can also use your collection (once you have amassed enough of a variety) to build your own decks of 20 cards that you can then use in either solo battles against AI, or against other players online
Presale prices for each of the Elder Dragons is as follows: Witherbloom, the Balancer: $34 Prismari, the Inspiration: $29 Lorehold, the Historian: $27 Quandrix, the Proof: $24 Silverquill, the Disputant: $22 Opening one of these mythic rare Elder Dragons will cover the cost of a few play boosters, especially if you cash them in at your (pre)release event
It's a bit like a task you set to run in the background, and in this case it greatly affects your board with no extra effort