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Rock Hydra
CREATURE — HYDRA Rare
Summer Magic / Edgar RESERVED LIST EDHREC #27,623
$1.00
+282.0%
7 days
Price history
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Rock Hydra price history chart, default range 3 months. currently $1.00.
Rock Hydra Price Summary
Rock Hydra's current headline price is $1.00.
Rock Hydra Printings & Prices
9 printings
Rock Hydra has 9 tracked printings across 8 sets, in nonfoil finishes.
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Sell Rock Hydra: Buylist Offers
8 offers
| Buyer | Printing | Finish | Cash offer | Retail | Spread |
|---|---|---|---|---|---|
| Card Kingdom | LEA #171 | Nonfoil | — | — | — |
| Card Kingdom | 30A #464 | Nonfoil | — | — | — |
| Card Kingdom | LEB #172 | Nonfoil | — | — | — |
| Card Kingdom | 2ED #172 | Nonfoil | — | — | — |
| Card Kingdom | 30A #167 | Nonfoil | — | — | — |
| Card Kingdom | CEI #172 | Nonfoil | — | — | — |
| Card Kingdom | CED #172 | Nonfoil | — | — | — |
| Card Kingdom | 3ED #173 | Nonfoil | — | — | — |
Rock Hydra Rules Text & Legality
View on Scryfall ↗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.
{R}: Prevent the next 1 damage that would be dealt to this creature this turn.
{R}{R}{R}: Put a +1/+1 counter on this creature. Activate only during your upkeep.
Rock Hydra is legal in Legacy and Commander, and not legal in Standard, Pioneer, Modern and Pauper.
standard
Not legal
pioneer
Not legal
modern
Not legal
legacy
Legal
commander
Legal
pauper
Not legal
Rock Hydra Rulings
4 most recent
- Aug 1, 2008 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.
- Aug 1, 2008 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.
- Oct 4, 2004 If put onto the battlefield without casting it from your hand, X will be zero.
- Oct 4, 2004 Once on the battlefield, the X is considered to be zero when calculating its mana cost.
Reprints & Reprint Risk
9 printings
Rock Hydra has been reprinted 9 times.
| Set | Date | Rarity | Treatment |
|---|---|---|---|
| 30A #464 | 2022-11-28 | Rare | Standard |
| 30A #167 | 2022-11-28 | Rare | Standard |
| SUM #173 | 1994-06-21 | Rare | Standard |
| 3ED #173 | 1994-04-11 | Rare | Standard |
| CEI #172 | 1993-12-10 | Rare | Standard |
| CED #172 | 1993-12-10 | Rare | Standard |
| 2ED #172 | 1993-12-01 | Rare | Standard |
| LEB #172 | 1993-10-04 | Rare | Standard |
| LEA #171 | 1993-08-05 | Rare | Standard |
30A #464 
3ED #173 
CEI #172 
CED #172 
2ED #172 
LEB #172 
LEA #171 Rock Hydra in Commander
Rock Hydra is the #27,623 most-played card on EDHREC, down 354 places over the last 30 days.
Rock Hydra FAQ
How much is Rock Hydra worth?
Rock Hydra is worth about $1.00 for its cheapest playable printing as of Sep 22, 2026.
Is Rock Hydra legal in Commander?
Yes — Rock Hydra is legal in Commander. It is also legal in Legacy.
Has Rock Hydra been reprinted?
Yes — Rock Hydra has been reprinted 9 times, with 9 printings tracked on The Index.
Why is Rock Hydra cheap?
Rock Hydra trades at about $1.00 — 9 reprints keep supply plentiful, and Commander demand is modest (#27,623 on EDHREC).