I'll be honest and say that I started daydreaming this deck when before I realized that Eye of the Storm would be rotating, and by the time I found that out I was too invested in this style of deck to bother adjusting it. So, no Runic Carvings is not the best card to use in conjunction with Primordial Protector, but it's the best one in Shaman's kit (unless you want to run Tidal Wave in a tempo deck, which you totally could; I just didn't feel like it would provide so much more value in comparison to Runic Carvings that it would be worth basically sacrificing a card slot). Bru'kan make things go boom.