Legendary Atlantean Tridon

Effect Monster

Legendary Atlantean Tridon is a Effect Monster (WATER/Sea Serpent, Level 3) with 1600 ATK / 800 DEF. First printed in Lord of the Tachyon Galaxy (2013).

Type: Effect Monster
Attribute: WATER
Monster type: Sea Serpent
Level: 3
ATK / DEF: 1600 / 800
Archetype: Atlantean
Banlist: Unlimited in the TCG, OCG, and Master Duel
TCG release: 2013-05-17
Printings: 2

Card text

You can Tribute this card and 1 Sea Serpent-Type monster; Special Summon 1 "Poseidra, the Atlantean Dragon" from your hand or Deck, then all monsters your opponent currently controls lose 300 ATK.

Approximate value

≈$0.20

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*
Lord of the Tachyon Galaxy	LTGY-EN033	Common	2013-05-17	$0.20
2014 Mega-Tin Mega Pack	MP14-EN019	Common	2014-08-28	$0.20

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