This is one of our overperformers
Any time life gain comes attached to an effect that advances your ability to win the long game its worth a second glance, and Sphinxs Revelation certainly passes the test
Any future bans are likely to come from this list, save for maybe something that shows up in a new set and immediately causes problems, like Nadu
Dungeons of Death Dungeons of Death is helmed by Sefris of the Hidden Ways
These cards are expensive mostly because they are extremely collectible and have low supply, not because they are playable, and foil reprintings wouldn't change this at all
People played Shrine of the Forsaken Gods and were happy about it, and it literally only made two mana if you were casting Ulamog, the Ceaseless Hunger