Your commander can help build up your board with her first effect, then drain your opponents life total with the second effect
Maralen, Fae Ascendant What does Maralen, Fae Ascendant want you to do
(8/23/2016) If you have more than one Hymn of the Wilds in the command zone, their abilities will each apply to the first creature spell you cast each turn
Failing is learning if you take something from it
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of Emet-Selch of the Third Seat's first ability)
It's also been confirmed that summons appear at all rarities, and the set will also have borderless sagas for the first time