---
name: "Rock Hydra"
mana_cost: "{X}{R}{R}"
cmc: 2
type_line: "Creature — Hydra"
colors: ["R"]
color_identity: ["R"]
keywords: []
set: "3ED"
set_name: "Revised Edition"
collector_number: "173"
rarity: "rare"
artist: "Jeff A. Menges"
oracle_id: "aff84707-f5f8-4f53-869e-feec78da8d8d"
canonical_url: "https://avascry.com/printing/rock-hydra-3ed"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# Rock Hydra
- **Mana Cost:** `{X}{R}{R}` (CMC: 2)
- **Type:** Creature — Hydra
- **Power/Toughness:** 0/0

## Oracle Text
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.

## Top 4096-Dim Neural Synergies
1. [Balduvian Hydra](/printing/balduvian-hydra-me2.md) — Creature — Hydra
2. [Protean Hydra](/printing/protean-hydra-m10.md) — Creature — Hydra
3. [Ironscale Hydra](/printing/ironscale-hydra-thb.md) — Creature — Hydra
4. [Hungering Hydra](/printing/hungering-hydra-pm19.md) — Creature — Hydra
5. [Apocalypse Hydra](/printing/apocalypse-hydra-bbd.md) — Creature — Hydra
6. [Molten Hydra](/printing/molten-hydra-ulg.md) — Creature — Hydra

## Printing Details
- **Set:** Revised Edition (3ED) #173
- **Rarity:** Rare
- **Artist:** Jeff A. Menges
- **Total Printings:** 16 across all historical editions

## Format Legalities
Commander: `legal` | Standard: `not_legal` | Modern: `not_legal` | Pioneer: `not_legal` | Legacy: `legal` | Vintage: `legal` | Pauper: `not_legal` | Penny: `legal`