Each time the Ring tempts you, you must choose a creature if you control one
Here you can get back stuff like spells or enchantments too, but even if three, it puts the work in
Gavin Verhey specifically stated multiple times in this announcement that a lot of the terms of these tiers fall under feel. It is technically very possible to build an incredibly powerful Commander deck that falls under the deck construction rules of the Exhibition Tier, but these decks are specifically weaker than the average Commander precon according to the second tier
Its card draw effect is shared with the table, so you can create multiple tokens, power existing ones up to start whittling down life totals, or both
Keep in mind that these can fluctuate very rapidly as listings of these cards appear on the market
In a dedicated Planeswalker deck, not only is this land going to gain you a million life, especially in multiples, but it's also going to help you cast every planeswalker under the sun