Among the flurry of announcements presented at MagicCon Amsterdam was the debut of The Hobbit, Magic: The Gathering’s next expansion and a return to the universe of J.R.R. Tolkien. That debut was only the beginning, though, as we are now in preview season as the set’s release approaches in August.  We can exclusively reveal two new Rare cards from the main Hobbit set. One is a powerful green enchantment that can keep your battlefield stocked, and the other is a…