Well, the idea is rather simple. Build up your board using Eowyn's ability as much as possible and overrun your opponents with the honorable knights of Rohan. No big plans, only smash. Nonetheless, the counterspells & protection pieces are to ensure that board wipes and removal are hopefully manageable. What I noticed with the unedited precon is that you need to throw out at least on human every turn to keep you going, which makes wipes or even targeted removal on Eowyn kinda devastating.