For that cost, you receive the ability to remove just about any creature from the battlefield
The Selesnya four-drop has first strike, trample and a 4/4 and then has an ETB ability to search your library for two cheap artifact, dork or enchantment cards and toss them into your hand
The early version was what we might describe as slightly unbalanced. And that would be a wildly generous description
Whenever equipped creature deals combat damage to a player, you may cast an instant or sorcery spell from your hand with mana value less than or equal to that damage without paying its mana cost
So, once we see more, dont be surprised if this list changes
Additionally, the power and toughness bonus she offers provides immediate value if you have Skeletons or Zombies under your control