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Rock Hydra

Rock Hydra

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Masters Edition IV

#133 · EN · Rare · 2011-01-10

Browse all 11 printings ↓

Rock Hydra

{X}{R}{R}

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. {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.

Power: 0

Toughness: 0

Artist: Jeff A. Menges

Color identity: R

Reference prices

MTGO: 0.02 tix

Data snapshot 2026-10-22. Not live offers.

Use in a combo · Use in a deck

Editions & versions

11 printings across 10 editions. Choose a printing to view its artwork and details.

Reference prices · Data snapshot 2026-10-22. Prices vary by seller and condition; — means no quote.

Combos using this card

No combos yet.

Format legality
Standardnot legal
Futurenot legal
Historicnot legal
Timelessnot legal
Gladiatornot legal
Pioneernot legal
Modernnot legal
Legacylegal
Paupernot legal
Vintagelegal
Pennylegal
Commanderlegal
Oathbreakerlegal
Standardbrawlnot legal
Brawlnot legal
Competitivebrawlnot legal
Alchemynot legal
Paupercommandernot legal
Duellegal
Oldschoolnot legal
Premodernnot legal
Predhlegal
Tlrlegal
Rulings

2008-08-01 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.

2008-08-01 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.

2004-10-04 If put onto the battlefield without casting it from your hand, X will be zero.

2004-10-04 Once on the battlefield, the X is considered to be zero when calculating its mana cost.

Current Oracle text is shown for every printing.