My Verdict: Hail, Caesar offers a dynamic, cool Commander experience that combines thematic immersion with tactical depth
Which one is better really depends on the rest of the deck: Sage is better if you want the body to stick around (Skullclamp) or if you're an Elf deck, but Breaker is better if you don't care about the body, sacrificing itself is a plus (Fecundity), or you're an Elemental deck (Omnath, Locus of the Roil)
Shock lands No pain, no gain Shock lands are lands that enter tapped unless you pay two life to untap them
Ketramoses bow is actually Oketras, the former God of stability and order on Amonkhet before she was killed by the Scorpion God during the events of Hour of Devastation
Up until that point however it was just a recursive attacker that would either get three free damage or take out something on my opponents board