The Storm Scale doesn't really address cameo mechanics, as one-of apperances have a much lower bar to clear than bringing back a mechanic as a major component of a set
Split second is a mechanic thats rarely seen, but thats because you need to be very careful with it, as it means opponents cant respond to it with most actions
Feel free to comment with your favorite non-precon commanders, too
The combination of lore potential, defence, healing and card draw on a single card with a reasonable ink cost makes Rapunzel, Gifted with Healing a standout amber card, and worthy of a place in any amber deck
But Rollout or Rock Tomb are okay STAB moves for early and mid game if you want them
The low casting cost on Silas might not be as low as Rograkh's, but it does help keep the game plan on track