Take a look at the prices from MH2 (which was the most printed set ever until Tale of Middle-earth took it over last year), and youll see theres only a handful of cards there that are worth the price of a pack or more
They work differently to other cards and act more passively to gain lore or give abilities
It just so happens that her printing - along with Traveling Chocobo and Sazh's Chocobo - provided the basis for a fun Standard deck: Landfall
Pyre of Heroes Pyre of Heroes is the typal Birthing Pod, and in the right deck, you can have all sorts of combos and sequences
Even better, if you follow Nissa up by actually playing that Forest, and have seven or more lands, you can immediately flip her to her planeswalker half, allowing you to grab another land, draw a card, or make a 4/4
During this time, players will have a taste of whats to come and get a feel on how the expansion can shake up the games multiple formats