Cheapest priced copy (RNA Guild Kit): $0.79 at Card Kingdom, near mint, their price list as of .
Borborygmos 
Legendary Creature — Cyclops · 6/7 · Rare · RNA Guild Kit · #87
Trample
Whenever Borborygmos deals combat damage to a player, put a +1/+1 counter on each creature you control.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.79 to $7.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| RNA Guild Kit | 87 | Rare | $0.79 | — |
| Guildpact | 103 | Rare | $0.99 | $7.99 |
One ruling from Wizards of the Coast
- 1 February 2006Borborygmos's ability won't save your creatures that were dealt lethal damage in combat. Those creatures will be sent to your graveyard before they would get a counter.