Ancient Gear Hydra
Machine / Effect
EARTH / 
7At 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.
2700/1700
CARD ID: 81269231
STATUS TCG: Unlimited
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| TCG Set | Symbol | Rarity | Low | Avg | Trend | |
|---|---|---|---|---|---|---|
| Legendary Duelists: Season 1 | LDS1-EN083 | Common | -,--€ | -,--€ | -,--€ | |
| Machine Reactor Structure Deck | SR03-EN002 | Super Rare | -,--€ | -,--€ | -,--€ |
This monster appears to be related to Ancient Gear Gadjiltron Chimera, with both having effects reliant on Tributing a Gadget monsters, a unique color scheme from the other Ancient Gear monsters, and being based on Greek mythological creatures (the Hydra and the Chimera, respectively).