Ancient Gear Hydra

Effect Monster

Ancient Gear Hydra is a Effect Monster (EARTH/Machine, Level 7) with 2700 ATK / 1700 DEF. First printed in Machine Reactor Structure Deck (2017).

Type: Effect Monster
Attribute: EARTH
Monster type: Machine
Level: 7
ATK / DEF: 2700 / 1700
Archetype: Ancient Gear
Banlist: Unlimited in the TCG, OCG, and Master Duel
TCG release: 2017-04-13
Printings: 2

Card text

At the end of the Damage Step, when this card that was Tribute Summoned by Tributing an "Ancient Gear" monster battles an opponent's monster, but the opponent's monster was not destroyed by the battle: You can banish that opponent's monster. If this card was Tribute Summoned by Tributing a "Gadget" monster, it can attack all monsters your opponent controls, once each. If an "Ancient Gear" monster you control attacks, your opponent cannot activate Spell/Trap Cards and monster effects until the end of the Damage Step.

Approximate value

≈$0.25

A rough figure from recent listings (updated 2026-06-09), not a market value or official price. It varies a lot with printing, condition, edition, rarity, and grading. Check current listings below before buying or selling.

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Printings & rarities

All printings →

Set	Set code	Rarity	Release	Price*
Machine Reactor Structure Deck	SR03-EN002	Super Rare	2017-04-13	$0.25
Legendary Duelists: Season 1	LDS1-EN083	Common	2020-07-02	$0.25

*Approximate, from recent marketplace listings, not market values.