Cheapest priced copy (Jumpstart 2022): $11.99 at Card Kingdom, near mint, their price list as of .
Muxus, Goblin Grandee 
Legendary Creature — Goblin Noble · 4/4 · Rare · The List · #JMP-24
When Muxus enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.
Whenever Muxus attacks, it gets +1/+1 until end of turn for each other Goblin you control.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
6 printings · $11.99 to $99.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 575 | Rare | $11.99 | — |
| Jumpstart | 24 | Rare | $11.99 | — |
| The List | JMP-24 | Rare | $12.99 | — |
| Secret Lair Drop | 1314 | Rare | $57.99 | — |
| Secret Lair Drop | 1314★ | Rare | — | $99.99 |
| Secret Lair Drop (Jareth, Goblin King) | 2833 | Mythic | — | — |
2 rulings from Wizards of the Coast
- 23 June 2020If a card in a player's library has {X} in its mana cost, X is considered to be 0.
- 23 June 2020The bonus Muxus gets is determined only as its last ability resolves. Once that happens, the bonus won't change later in the turn even if the number of Goblins you control changes.