Rock Hydra 
Creature — Hydra0/0
Oracle text (EN)
Creature — Hydra
This creature enters with X +1/+1 counters on it.
For each 1 damage that would be dealt to this creature, if it has a +1/+1 counter on it, remove a +1/+1 counter from it and prevent that 1 damage.
: Prevent the next 1 damage that would be dealt to this creature this turn.
: Put a +1/+1 counter on this creature. Activate only during your upkeep.
Printing details
- Set
- 2ED · 172
- Rarity
- Rare
- Language
- EN
- Artist
- Jeff A. Menges
- Released
- 1993-12-01
- Prices
- €24.60 · $48.15
Price history
The trend shows with at least 7 days of history.
- Cardmarket, trend
- CardTrader, Near Mint minimum (EN)
The history starts on October 28, 2026 and grows every day.
Show the data
| Date | Cardmarket, trend | CardTrader, Near Mint minimum (EN) |
|---|---|---|
| October 28, 2026 | €24.60 | €89.59 |
Prices
| Source | Non-foil | Foil |
|---|---|---|
| Cardmarket | low €14.00 trend €24.60 30-day avg €28.99 | low – trend €0.00 30-day avg – |
| CardTrader (EN) | NM from €89.59 with Zero from €89.59 | NM from – |
| CardTrader (any language) | NM from €89.59 | NM from – |
Cardmarket updated Oct 30, 2026 · CardTrader updated Oct 30, 2026
Buy and look up
Legality
- standard Not legal
- pioneer Not legal
- modern Not legal
- legacy Legal
- vintage Legal
- commander Legal
- pauper Not legal
- alchemy Not legal
- brawl Not legal
- competitivebrawl Not legal
- duel Legal
- future Not legal
- gladiator Not legal
- historic Not legal
- oathbreaker Legal
- oldschool Not legal
- paupercommander Not legal
- penny Legal
- predh Legal
- premodern Not legal
- standardbrawl Not legal
- timeless Not legal
- tlr Legal
Rulings
-
If put onto the battlefield without casting it from your hand, X will be zero.
-
Once on the battlefield, the X is considered to be zero when calculating its mana cost.
-
If damage that would be dealt to Rock Hydra can't be prevented, you still remove a +1/+1 counter from it for each 1 damage dealt.
-
You can activate the activated ability that prevents damage any time, even if no source seems likely to deal damage to you in the near future. It will prevent the next 1 damage that would be dealt this turn, even if that turns out to be much later in the turn.