You can tap it for no mana to add a burden counter and draw that many cards
Take a look at MaRos articles describing new sets - he does not just dump the image gallery and say let me know what you think - he describes the sets design goals, the mechanics, why they were chosen, how those mechanics were placed in each colour, the limited archetypes the set was designed around, some anecdotes about the design process, etc
Its high value is driven by a low graded 10 population of just a few dozen and the high attrition rate of these fragile, low-HP cards that were often lost to schoolyard play
Many want to get in on the collecting in case they find the next Charizard
While the main set wasnt designed specifically for Commander, all of the cards from this product were, and thus all of them are at the very least playable
Finally, if youre looking for something a bit more high impact, there are a number of mass-reanimate spells available