Cheapest priced copy (Edge of Eternities): $0.49 at Card Kingdom, near mint, their price list as of .
Mm'menon, the Right Hand 
Legendary Creature — Jellyfish Advisor · 3/4 · Rare · Edge of Eternities · #290
Flying
You may look at the top card of your library any time.
You may cast artifact spells from the top of your library.
Artifacts you control have "{T}: Add {U}. Spend this mana only to cast a spell from anywhere other than your hand."
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
4 printings · $0.49 to $5.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Edge of Eternities | 68 | Rare | $0.49 | $0.79 |
| Edge of Eternities | 290 | Rare | $2.29 | $5.99 |
| Edge of Eternities Promos | 68p | Rare | $0.69 | $0.79 |
| Edge of Eternities Promos | 68s | Rare | — | $1.29Out of stock |