You can check out Magics official decklists to see what more advanced players are using and perhaps use that as a jumping-off point
Being able to play one additional land per turn for the low, low price of one green mana is absolutely absurd value, especially when put into a deck that employs landfall triggers and other silly shenanigans of that ilk
Here's the formula to calculate how many more drafts you need to do to reach the Critical Point: R = Total number of Rares of that set already in your collection P = Total number of reward packs of that set already in your collection N = Number of "new" Rares you pull from a draft on average (Higher earlier, lesser later, but an average across the set is fine.) W = Average number of reward packs from doing the draft
Creatures of the chosen type have shroud
Icons of the game, theyre banned in every non-Vintage constructed format and have never been reprinted after 2nd Edition (Unlimited), causing them to be the most valuable Standard printing cards ever
That said, its a powerhouse of a Commander, and very easy to get online