Heralds Horn is a fantastic reprint as it was starting to get expensive, and pretty much every tribal deck wants one
(Release Late 08-26)*Some items have $0 Becuase we don't have final confirmation on details yet
For years, planeswalkers had a noticeable advantage in Modern, because there just wasnt a profitable way to interact with them
Mystic Snake was often a way to do damage to an opponent who you otherwise couldn't find an opening to get a threat down against or a two-for-one by fighting one of the many bears that were in decks in those days, and when it did these things it was good
Chapter III in particular makes attacking feed you cards, so sometimes Shiva plays out like two turns of Moat. You can also try to combine this with other stun effects to draw extra cards, though there arent many of those (mostly just Ice Flan and Omega, Heartless Evolution)
I love permanent spells with flash and I love artifacts that you can grab with Urza's Saga