If Lightning Greaves is attached to the only creature you control, you won't be able to attach other equipment to it (or target it with anything else) until you have another creature to which you can attach Lightning Greaves
It fills graveyards, gives you card selection, and adds an Eldrazi Spawn to boot
Lower graded copies trade close to clean raw
You can do the same thing mechanically to every other Eikon in the game, and you can depict the epic battles between them by using the Saga subtheme of enchantment
Today, I am writing up an Oathbreaker deck tech revolving around a card that is significantly better , as evidenced by its use in the Standard and Commander formats
Each is epic in their own way, but what if victory could be achieved by a single spell