This is a good card that hardly anyone knows about anymore. Everyone knows this card's younger, weaker cousin Cathodion, but this guy never sees play anymore. It could be because of its $8 price tag (given that it's an Antiquities card though...) but I still don't think this card is appreciated enough. This card works great if you've a sack outlet that produces mana (like Krark-Clan Ironworks or Priest of Yawgmoth) because it'll produce a lot more mana than it would normally. Also, it's a 4/4 for 4, so it's fairly decent as a creature too. Finally, if it dies in combat, you suddenly have the mana you need to play that Miraculous Recovery in order to bring him back! But, if you don't have that instant or sack outlet, this card might not be the best choice.
Pros: 4/4 for 4, adds mana in death
Cons: Basically a vanilla, might not be able to use the mana made