Cheapest priced copy (Ice Age): $0.59 at Card Kingdom, near mint, their price list as of .
Balduvian Hydra 
Creature — Hydra · 0/1 · Rare · Ice Age · #173
This creature enters with X +1/+0 counters on it.
Remove a +1/+0 counter from this creature: Prevent the next 1 damage that would be dealt to it this turn.
{R}{R}{R}: Put a +1/+0 counter on this creature. Activate only during your upkeep.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.59 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ice Age | 173 | Rare | $0.59 | — |