Cheapest priced copy (Lorwyn Eclipsed Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Jegantha, the Wellspring 
Legendary Creature — Elemental Elk · 5/5 · Rare · Ikoria: Lair of Behemoths · #222
Companion — No card in your starting deck has more than one of the same mana symbol in its mana cost. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.)
{T}: Add {W}{U}{B}{R}{G}. This mana can't be spent to pay generic mana costs.
Legal inCommanderLegacyVintage
Banned inPioneerModern
Not legal inBrawlStandardPauper
9 printings · $0.49 to $17.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Lorwyn Eclipsed Commander | 125 | Rare | $0.49 | — |
| Ikoria: Lair of Behemoths | 222 | Rare | $0.49 | $1.99 |
| Ikoria: Lair of Behemoths | 352 | Rare | $1.99 | $4.99 |
| Multiverse Legends | 44 | Rare | $0.79 | $1.99 |
| Multiverse Legends | 109 | Rare | — | — |
| Multiverse Legends | 174 | Rare | — | $17.99 |
| Multiverse Legends | 174z | Rare | — | — |
| Ikoria: Lair of Behemoths Promos | 222p | Rare | $1.79 | $2.99 |
| Ikoria: Lair of Behemoths Promos | 222s | Rare | — | $4.99 |
5 rulings from Wizards of the Coast
- 17 April 2020Jegantha's companion ability compares the exact symbols in the mana costs of cards in your deck. If any one card has the same symbol twice, such as {X}{X}{R} or {(r/g)}{(r/g)}, the companion condition isn't satisfied.
- 17 April 2020A generic mana cost is usually represented by numeric mana symbols ({1}, {2}, and so on) and also {X}. It is any cost requiring mana where that cost isn't {C}, {W}, {U}, {B}, {R}, or {G}.
- 1 June 2020Wizards of the Coast has issued functional errata for the Companion mechanic. Instead of casting companions from outside the game: Once per game, any time you could cast a sorcery (during your main phase when the stack is empty), you can pay {3} to put your companion from your sideboard into your hand. This is a special action, not an activated ability. It happens immediately and can’t be responded to. It can’t be countered or stopped by cards like Phyrexian Revoker. For more information please see https://magic.wizards.com/en/articles/archive/news/june-1-2020-banned-and-restricted-announcement
- 1 June 2020Once you put your companion into your hand, it behaves like any other card you’ve brought into the game. For example, if it’s countered or destroyed, it’s put into your graveyard, remaining in the game.
- 14 April 2023You can spend mana from Jegantha's mana ability to pay for a hybrid symbol such as {2/W}, but only if you choose to pay the colored mana component, not the generic mana component.