Cheapest priced copy (Commander 2016): $11.99 at Card Kingdom, near mint, their price list as of .
Collective Voyage 
Sorcery · Rare · Commander 2016 · #145
Join forces — Starting with you, each player may pay any amount of mana. Each player searches their library for up to X basic land cards, where X is the total amount of mana paid this way, puts them onto the battlefield tapped, then shuffles.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
4 printings · $11.99 to $14.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2016 | 145 | Rare | $11.99 | — |
| Commander 2011 | 147 | Rare | $12.99 | — |
| The List | CMD-147 | Rare | $14.99 | — |
| Secret Lair Drop | 1009 | Rare | $11.99 | $12.99 |
One ruling from Wizards of the Coast
- 22 September 2011You may find any number of basic lands up to X, including zero. However, searching and shuffling your library is not optional.