Cheapest priced copy (Final Fantasy Commander): $1.29 at Card Kingdom, near mint, their price list as of .
Mothra, Supersonic Queen 
Luminous Broodmoth
Creature — Insect · 3/4 · Mythic · Ikoria: Lair of Behemoths · #371
Flying
Whenever a creature you control without flying dies, return it to the battlefield under its owner's control with a flying counter on it.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
8 printings · $1.29 to $69.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Bloomburrow Commander | 74 | Mythic | $17.99 | $27.99 |
| Bloomburrow Commander | 144 | Mythic | $1.99 | — |
| Final Fantasy Commander | 246 | Mythic | $1.29 | $2.99 |
| Ikoria: Lair of Behemoths | 21 | Mythic | $2.49 | $4.99 |
| Ikoria: Lair of Behemoths | 316 | Mythic | $9.99 | $15.99 |
| Ikoria: Lair of Behemoths (Mothra, Supersonic Queen) | 371 | Mythic | $59.99 | $69.99 |
| Ikoria: Lair of Behemoths Promos | 21p | Mythic | $3.49 | $7.99 |
| Ikoria: Lair of Behemoths Promos | 21s | Mythic | — | $17.99 |
4 rulings from Wizards of the Coast
- 17 April 2020If a merged creature dies and that creature didn't have flying, each card that was part of that merged creature is returned to the battlefield. Each one has a flying counter on it.
- 17 April 2020If Luminous Broodmoth dies after losing flying but not losing its triggered ability, its ability will trigger for itself.
- 17 April 2020If Luminous Broodmoth dies at the same time as a creature without flying, its ability triggers for that creature.
- 17 April 2020Luminous Broodmoth's ability triggers if a token creature without flying dies, but the token won't be returned to the battlefield. If that token was a merged creature, any cards that were part of it will be returned to the battlefield.