Cheapest priced copy (Commander Legends: Battle for Baldur's Gate): $0.79 at Card Kingdom, near mint, their price list as of .
Scaled Nurturer 
Creature — Dragon Druid · 0/2 · Rare · Secret Lair Drop · #7101
{T}: Add {G}. When you spend this mana to cast a Dragon creature spell, you gain 2 life.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
2 printings · $0.79 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends: Battle for Baldur's Gate | 252 | Common | $0.79 | $0.99 |
| Secret Lair Drop | 7101 | Rare | $4.49 | $3.99 |
3 rulings from Wizards of the Coast
- 10 June 2022The mana created by Scaled Nurturer can be spent on anything, not just Dragon creature spells.
- 10 June 2022If more than one {G} produced by a Scaled Nurturer is spent to cast a single Dragon creature spell, the delayed triggered ability associated with each mana spent will trigger. You will gain 2 life that many times.
- 10 June 2022The delayed triggered ability will trigger whether Scaled Nurturer is still on the battlefield or not.