Cheapest priced copy (Ikoria: Lair of Behemoths): $0.49 at Card Kingdom, near mint, their price list as of .
Jubilant Skybonder 
Creature — Human Wizard · 2/2 · Uncommon · Starter Commander Decks · #232
Flying
Creatures you control with flying have "Spells your opponents cast that target this creature cost {2} more to cast."
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ikoria: Lair of Behemoths | 223 | Uncommon | $0.49 | $0.99 |
| Starter Commander Decks | 232 | Uncommon | $0.69 | — |
2 rulings from Wizards of the Coast
- 17 April 2020Jubilant Skybonder’s last ability applies to itself as long as it still has flying.
- 17 April 2020An opponent’s spell that targets a single creature with flying you control more than once costs only {2} more to cast. An opponent’s spell that targets multiple creatures with flying you control costs {2} more for each of those creatures.