In general, Thalia, Guardian of Thraben is the better of the two since it comes down a turn earlier, but there is some upside (outside of budget) to playing a split of both since Thalia is legendary, so while we can never have two copies of Thalia, Guardian of Thraben on the battlefield, we can have one Thalia and one Vryn Wingmare
Each card battle also has a series of Battle Tasks, which upon completion give additional rewards, as well as Chance Rewards, which is how players will obtain rare promo cards
For 2 mana, you can remove some of the most prevalent kinds of permanents (except artifacts) at instant speed
What is Stoneforge Mystic going to be doing
Stalwart Shield Bearers A decent defender that buffs up your entire board
Ultimately, Pure Dinosaurs remain one of the most reliable decks, so fans who never wanted to give them up can still go a long way.