“Paleozoic” is an archetype of mostly Normal Trap Cards that have the ability to Special Summon themselves from the Graveyard as Level 2 WATER monsters. You are probably already familiar with some of these cards: Paleozoic Canadia and Paleozoic Hallucigenia are quite popular in the current meta, but you likely haven’t seen them being played in a dedicated deck.
Paleozoic is a Control Deck that focuses on disrupting the opponent’s plays while keeping card advantage, slowly depleting their resources until they finally succumb to the onslaught of 2400 ATK “Paleozoic” monsters under the Field Spell Wetlands.
Other popular versions of the deck run Vision HERO Witch Raider or Citadel Whale as alternative winning conditions, taking advantage of the fact that “Paleozoic” cards are Trap Cards and WATER monsters respectively.
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| [Skill] description | User |
|---|---|
| Shadow Game At the end of their respective turn, each player will lose LP equal to "100" times the number of cards in their own graveyard. |  Yami Marik |
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| [Skill] description | User |
|---|---|
| Chain Reaction Your opponent loses 200 Life Points every time you activate a Trap Card. |  Odion |
 Lava Golem | FIRE Fiend ★8 ATK 3000 / DEF 2500 |
| Yami Marik [UR] Yami Marik event [UR] Yami Marik Starter Deck [UR] | |
| Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) to your opponent's side of the field by Tributing 2 monsters they control. You cannot Normal Summon/Set the turn you Special Summon this card. During each of your Standby Phases: Take 1000 damage. | |
 Dewdark of the Ice Barrier | WATER Aqua ★2 ATK 1200 / DEF 800 |
| Judgement Force [N] | |
| If the only face-up monsters you control are Level 2 or lower monsters, this card can attack your opponent directly. | |
 Spiritual Beast Tamer Winda | WIND Psychic ★4 ATK 1600 / DEF 1800 |
| Spirit of the Beast [UR] | |
| If this card in its owner's possession is destroyed by an opponent's card (by battle or card effect): You can Special Summon 1 "Ritual Beast" monster from your Deck or Extra Deck, ignoring its Summoning conditions. You can only Special Summon "Spiritual Beast Tamer Winda(s)" once per turn. | |
 Ritual Beast Ulti-Apelio | WIND Pyro ★6 ATK 2600 / DEF 400 |
| Spirit of the Beast [UR] | |
| 1 "Ritual Beast Tamer" monster + 1 "Spiritual Beast" monster Must be Special Summoned (from your Extra Deck) by banishing the above cards you control, and cannot be Special Summoned by other ways. (You do not use "Polymerization".) If this card attacks, it is unaffected by other cards' effects until the end of the Damage Step. During either player's turn: You can return this card you control to the Extra Deck, then target 2 of your banished monsters (1 "Ritual Beast Tamer" monster and 1 "Spiritual Beast" monster); Special Summon them in Defense Position. | |
 Ritual Beast Ulti-Pettlephin | WIND Aqua ★6 ATK 200 / DEF 2800 |
| Spirit of the Beast [R] | |
| 1 "Ritual Beast Tamer" monster + 1 "Spiritual Beast" monster Must be Special Summoned (from your Extra Deck) by banishing the above cards you control, and cannot be Special Summoned by other ways. (You do not use "Polymerization".) Cannot be destroyed by card effects. During either player's turn: You can return this card you control to the Extra Deck, then target 2 of your banished monsters (1 "Ritual Beast Tamer" monster and 1 "Spiritual Beast" monster); Special Summon them in Defense Position. | |
 Amulet of Ambition | Equip Spell |
| Ranked Rewards [SR] | |
| Equip only to a Normal Monster. If it battles a monster with a higher Level, the equipped monster gains 500 ATK x the difference in Levels (during that battle only). When this card is sent to the Graveyard, you can return it to the top of your Deck. | |
 Wetlands | Field Spell |
| Duel-A-Thon [SR] Ranked Rewards [SR] | |
| All Aqua-Type/WATER/Level 2 or lower monsters gain 1200 ATK. | |
 Paleozoic Canadia | Normal Trap |
| Valiant Souls [UR] | |
| Target 1 face-up monster your opponent controls; change it to face-down Defense Position. Once per Chain, when a Trap Card is activated while this card is in your Graveyard: Special Summon this card as a Normal Monster (Aqua-Type/WATER/Level 2/ATK 1200/DEF 0). (This card is NOT treated as a Trap Card.) If Summoned this way, this card is unaffected by monster effects, also banish it when it leaves the field. | |
Use Paleozoic Canadia to disrupt your opponent’s plays: flip their monsters face-down to prevent them from attacking, from using cards like Spellbook of Fate and even from Synchro Summoning.
 Paleozoic Hallucigenia | Normal Trap |
| Selection Box Vol. 01 mini [UR] Stardust Acceleration [UR] | |
| Target 1 face-up monster on the field; its ATK and DEF become half its current ATK and DEF until the end of this turn. Once per Chain, when a Trap Card is activated while this card is in your Graveyard: Special Summon this card as a Normal Monster (Aqua-Type/WATER/Level 2/ATK 1200/DEF 0). (This card is NOT treated as a Trap Card.) If Summoned this way, this card is unaffected by monster effects, also banish it when it leaves the field. | |
 Paleozoic Pikaia | Normal Trap |
| Valiant Souls [R] | |
| Discard 1 "Paleozoic" card, then draw 2 cards. Once per Chain, when a Trap Card is activated while this card is in your Graveyard: Special Summon this card as a Normal Monster (Aqua-Type/WATER/Level 2/ATK 1200/DEF 0). (This card is NOT treated as a Trap Card.) If Summoned this way, this card is unaffected by monster effects, also banish it when it leaves the field. | |
By discarding a “Paleozoic” card, Paleozoic Pikaia allows you to draw two cards.
Use Pikaia to draw through your Deck and fill up your GY with “Paleozoic” cards that you will then Special Summon as 1200 ATK monsters by chaining their effects to the activation of a Trap Card.
 Paleozoic Marrella | Normal Trap |
| Valiant Souls [N] | |
| Send 1 Trap Card from your Deck to the Graveyard. Once per Chain, when a Trap Card is activated while this card is in your Graveyard: Special Summon this card as a Normal Monster (Aqua-Type/WATER/Level 2/ATK 1200/DEF 0). (This card is NOT treated as a Trap Card.) If Summoned this way, this card is unaffected by monster effects, also banish it when it leaves the field. | |
Paleozoic Marella allows you to send a Trap Card directly from your Deck to the Graveyard; use Marella to thin your Deck and set up your next plays.
You can chain the effect of your “Paleozoic” cards from your Graveyard to your own Trap Cards or to one of your opponent’s Trap Cards, but remember that you can’t do this outside of a certain window of opportunity.
You can’t chain Paleozoic Marella’s effect from the Graveyard to a Mirror Wall that was activated during the Damage Step and you can’t chain it to the activation of Counter Trap (Spell Speed 2 vs Spell Speed 3).
 Brionac, Dragon of the Ice Barrier | WATER Sea Serpent ★6 ATK 2300 / DEF 1400 |
| Aerial Assault [UR] | |
| 1 Tuner + 1+ non-Tuner monsters You can discard any number of cards to the GY, then target the same number of cards your opponent controls; return those cards to the hand. You can only use this effect of "Brionac, Dragon of the Ice Barrier" once per turn. | |
 Coral Dragon | WATER Dragon ★6 ATK 2400 / DEF 500 |
| Chronicle of Glory [UR] | |
| 1 Tuner + 1 or more non-Tuner monsters Once per turn: You can discard 1 card, then target 1 card your opponent controls; destroy it. If this Synchro Summoned card is sent from the field to the Graveyard: You can draw 1 card. You can only use this effect of "Coral Dragon" once per turn. | |
 White Aura Dolphin | WATER Fish ★6 ATK 2400 / DEF 1000 |
| Cybernetic Rebellion [SR] | |
| 1 Tuner + 1+ non-Tuner monsters Once per turn: You can target 1 face-up monster your opponent controls; its ATK becomes half its original ATK until the end of this turn. If this card you control is destroyed by an opponent's card (by battle or card effect) and sent to your GY: You can banish 1 other WATER monster from your GY; Special Summon this card, and if you do, it is treated as a Tuner. | |
 Old Entity Hastorr | WIND Reptile ★4 ATK 2300 / DEF 1000 |
| Masters of Shadow [SR] | |
| 1 Tuner + 1 or more non-Tuner monsters If this card is sent from the Monster Zone to the Graveyard: You can target 1 face-up monster your opponent controls; equip this card from your Graveyard to that monster. That monster cannot attack, also its effects are negated. If this card leaves the field while equipped to an opponent's monster by this effect: Take control of the monster this card was equipped to. | |
 Assault Blackwing - Onimaru the Divine Thunder | DARK Winged Beast ★12 ATK 3000 / DEF 2000 |
| Aerial Assault [R] | |
| 1 Tuner + 1 or more non-Tuner monsters If this card is Synchro Summoned using a "Blackwing" monster as Material, it is treated as a Tuner while face-up on the field. Cannot be destroyed by card effects. You can target 1 "Blackwing" monster in your Graveyard; this card's Level becomes the same as that monster's. You can only use this effect of "Assault Blackwing - Onimaru the Divine Thunder" once per Duel. If this card that was Synchro Summoned using only Synchro Monsters attacks, this card gains 3000 ATK during the Damage Step only. | |
| [Skill] description | User |
|---|---|
| Shadow Game At the end of their respective turn, each player will lose LP equal to "100" times the number of cards in their own graveyard. | Yami Marik |
| [Skill] description | User |
|---|---|
| Chain Reaction Your opponent loses 200 Life Points every time you activate a Trap Card. | Odion |
Chain Reaction is by far the most popular Skill used in combination with this Deck: it allows you to slowly chip away your opponent’s Life Points, making it easier for you to finish them off.
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| Mid Sept 2020 | Duelist Chronicle 5Ds: Fight for the Fortune Cup |
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| Late Sept 2020 | Yu-Gi-Oh Zexal Duel Links |
| [DSOD] Legendary Duelists Lvl 40 | ||
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 Seto Kaiba (DSOD) Lvl 40 |  Mokuba Kaiba (DSOD) Lvl 40 |  Scud (DSOD) Lvl 40 |
 Sera (DSOD) Lvl 40 |  Joey Wheeler (DSOD) Lvl 40 | |
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