Cheapest priced copy (Innistrad: Double Feature): $0.35 at Card Kingdom, near mint, their price list as of .
Magma Pummeler 
Creature — Elemental · 0/0 · Uncommon · Innistrad: Crimson Vow · #169
This creature enters with X +1/+1 counters on it.
If damage would be dealt to this creature while it has a +1/+1 counter on it, prevent that damage and remove that many +1/+1 counters from it. When one or more counters are removed from this creature this way, it deals that much damage to any target.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad: Double Feature | 436 | Uncommon | $0.35 | $0.49 |
| Innistrad: Crimson Vow | 169 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 19 November 2021If an amount of damage would be dealt to Magma Pummeler greater than the number of +1/+1 counters on it, all of that damage is prevented, and all of those counters are removed. In most cases, this will result in Magma Pummeler having 0 toughness, so it will be put into its owner's graveyard. Its reflexive triggered ability still triggers and it will still deal that much damage to any target.