Clockwork Hydra

Artifact Creature — Hydra

This creature enters with four +1/+1 counters on it.
Whenever this creature attacks or blocks, remove a +1/+1 counter from it. If you do, it deals 1 damage to any target.
{T}: Put a +1/+1 counter on this creature.

CMC
5
Mana cost
{5}
Color identity
C
Rarity
uncommon
Set
Time Spiral Remastered
Price
$0.20
EDHREC rank
#16830
Buy on TCGplayer
Clockwork Hydra card art
Clockwork Hydra enters with four +1/+1 counters, swings to remove one and deal a damage, and synergizes hard with any deck that wants counters moving on and off creatures. The five-mana cost is steep for what amounts to a 4/4 that shrinks every attack, but Omarthis, Ghostfire Initiate turns each counter removal into colorless mana fuel — suddenly that drawback is the whole point.

Best Commanders

Commanders with the highest synergy

01
Omarthis, Ghostfire Initiate

Omarthis, Ghostfire Initiate

27.5% of decks · synergy 0.26

Omarthis, Ghostfire Initiate cares about moving +1/+1 counters onto colorless permanents, and Clockwork Hydra's built-in counter removal triggers that engine every combat step — you're not losing counters, you're generating Omarthis triggers on a clock.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander
legacy
modern
pioneer
standard
vintage
pauper
oathbreaker

Clockwork Hydra is legal in Commander, Legacy, Modern, Vintage, and Oathbreaker, but it sees essentially zero competitive play outside Commander. In Legacy and Vintage the five-mana cost is prohibitive and the payoff doesn't approach format staple territory. In Modern the same problem applies — the card is legal but outclassed by nearly everything at that slot. Commander is the one format where Clockwork Hydra earns its place, specifically in dedicated counter-synergy builds where the self-stripping mechanic becomes a repeatable source of triggers rather than a liability.

Key Combos

Combo lines featuring this card

Price Context

Current price

$0.20 bulk tier

At $0.20, Clockwork Hydra is deep bulk — easy to acquire and easy to cut without regret. Bulk artifacts at this price point rarely spike unless a new commander breaks the mechanic wide open, so pick it up for pennies if the synergy fits and don't overthink the investment.

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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.