Cheapest priced copy (Modern Horizons): $0.59 at Card Kingdom, near mint, their price list as of .
Gromp 
Spore Frog
Creature — Frog · 1/1 · Rare · Secret Lair Drop · #696
Sacrifice this creature: Prevent all combat damage that would be dealt this turn.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
5 printings · $0.59 to $79.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Bloomburrow Commander | 238 | Common | $0.99 | — |
| Modern Horizons | 180 | Common | $0.59 | $5.99 |
| Prophecy | 126 | Common | $0.99 | $79.99 |
| The List | PCY-126 | Common | — | — |
| Secret Lair Drop (Gromp) | 696 | Rare | $6.49 | $6.99 |