Perhaps it's Buster Sword's iconic nature that is buoying its price for now
Illustrated by Mark Poole Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
Graded cards are usually worth more than an ungraded card
Use the cantrips to set up your early turns (and occasionally plan out a timely Miracle Temporal Mastery), Spreading Seas to slow them down, hopefully flash in Dictate of Kruphix on their end step, untap and hold up Cryptic Command or Gigadrowse, and then cast Time Warp on Turn 5 and never pass the turn back to them
Anax and Cymede This cards an interesting one, mythologically speaking
3 Avacyn, Angel Of Hope Gives Everything You Have Indestructible Avacyn, Angel of Hope isn't an easy creature to get into play at eight mana, but it's worth every bit of that mana cost if you can get her into play