Cheapest priced copy (Bloomburrow Commander): $1.79 at Card Kingdom, near mint, their price list as of .
Rapid Hybridization 
Instant · Uncommon · Secrets of Strixhaven Commander · #198
Destroy target creature. It can't be regenerated. That creature's controller creates a 3/3 green Frog Lizard creature token.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
12 printings · $1.79 to $22.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Bloomburrow Commander | 111 | Uncommon | $1.79 | — |
| Commander 2015 | 102 | Uncommon | $2.79 | — |
| Commander 2021 | 126 | Uncommon | $1.99 | — |
| Ravnica: Clue Edition | 93 | Uncommon | $1.99 | — |
| RNA Guild Kit | 109 | Uncommon | $1.99 | — |
| Gatecrash | 44 | Uncommon | $2.49 | $22.99 |
| The Lost Caverns of Ixalan Commander | 166 | Uncommon | $1.99 | — |
| The List | C21-126 | Uncommon | $2.29 | — |
| The List | CLU-93 | Uncommon | — | — |
| Secret Lair Drop | 1126 | Rare | $15.99 | $22.99 |
| Secrets of Strixhaven Commander | 198 | Uncommon | $1.99 | — |
| Tarkir: Dragonstorm Commander | 162 | Uncommon | $1.99Out of stock | — |
2 rulings from Wizards of the Coast
- 24 January 2013If the creature is an illegal target when Rapid Hybridization tries to resolve, it won't resolve and none of its effects will happen. No Frog Lizard token will be created.
- 1 July 2013If Rapid Hybridization resolves and the creature isn't destroyed (perhaps because it has indestructible), its controller will still get the Frog Lizard token.