| HA02-EN017
| Ally Mind
| Tuner Monster | Dark | Machine | 5 | 1800 | 1400 | A high-performance unit developed to enhance the Artificial Intelligence program in Allies of Justice. Loaded with elements collected from a meteor from the Worm Nebula, it allows for high tuning performance, but its true capacity is not yet uncovered. |
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| PTDN-EN089
| Aztekipede, the Worm Warrior
| Effect Monster | Earth | Insect | 4 | 1900 | 400 | This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by removing from play 1 Insect Type Monster from your Graveyard. When this card inflicts Battle Damage to your opponent, send the top card of their Deck to the Graveyard. |
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| MDP2-EN018
| Dungeon Worm
| Normal Monster | Earth | Insect | 5 | 1800 | 1500 | Hidden under the floors of a labyrinth, it swallows any who pass above. |
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| DB1-EN209
| Humanoid Worm Drake
| Fusion Monster | Water | Aqua | 7 | 2200 | 2000 | "Worm Drake + "Humanoid Slime" |
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| LON-005
| Humanoid Worm Drake
| Fusion Monster | Water | Aqua | 7 | 2200 | 2000 | "Worm Drake" + "Humanoid Slime" |
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| TLM-EN022
| Medusa Worm
| Effect Monster | Earth | Rock | 2 | 500 | 600 | "You can flip this card into face-down Defense Position once per turn during your Main Phase. When this card is Flip Summoned successfully, destroy 1 monster on your opponent's side of the field." |
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| SD7-EN014
| Medusa Worm
| Effect Monster | Earth | Rock | 2 | 500 | 600 | "Once per turn, during your Main Phase, you can flip this card into face-down Defense Position. When this card is Flip Summoned, destroy 1 monster on your opponent's side of the field." |
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| DR3-EN202
| Medusa Worm
| Effect Monster | Earth | Rock | 2 | 500 | 600 | Once per turn, during your Main Phase, you can flip this card into face-down Defense Position. When this card is Flip Summoned, destroy 1 monster on your opponent's side of the field. |
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| TP3-001
| Needle Worm
| Effect Monster | Earth | Insect | 2 | 750 | 600 | FLIP: Discard 5 cards from the top of your opponent's Deck to his/her Graveyard. |
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| TP5-EN005
| Needle Worm
| Effect Monster | Earth | Insect | 2 | 750 | 600 | FLIP: Discard 5 cards from the top of your opponent's Deck to his/her Graveyard. |
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| DB2-EN102
| Needle Worm
| Effect Monster | Earth | Insect | 2 | 750 | 600 | FLIP: Discard 5 cards from the top of your opponent's Deck to their Graveyard. |
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| GLD1-EN006
| Needle Worm
| Effect Monster | Earth | Insect | 2 | 750 | 600 | Flip: Discard 5 cards from the top of your opponent's Deck to the Graveyard |
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| STOR-EN029
| Scrap Worm
| Tuner Monster | Earth | Insect | 2 | 500 | 100 | This card can attack your opponent directly. If this card attacks, it is destroyed at the end of the Battle Phase. If this card is destroyed by the effect of a "Scrap" card and sent to the Graveyard, you can select 1 "Scrap" monster in your Graveyard, except "Scrap Worm", and add it to your hand. |
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| ABPF-EN099
| Shield Worm
| Effect Monster | Earth | Insect | 4 | 800 | 2000 | When this card is Summoned, it is changed to Defense Position. Then, send 1 card from the top of your opponent's Deck to the Graveyard for each face-up Insect-Type monster you control. |
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| SDK-004
| The Wicked Worm Beast
| Effect Monster | Earth | Beast | 3 | 1400 | 700 | This card is returned to your hand at the end of your turn. |
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| DB2-EN090
| The Wicked Worm Beast
| Effect Monster | Earth | Beast | 3 | 1400 | 700 | This face-up card on the field is returned to the owner's hand during the End Phase of your turn. |
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| GLD4-EN003
| The Wicked Worm Beast
| Effect Monster | Earth | Beast | 3 | 1400 | 700 | This face-up card on the field is returned to the owner's hand during the End Phase of your turn. |
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| HA01-EN017
| Worm Apocalypse
| Effect Monster | Light | Reptile | 1 | 300 | 200 | FLIP: Destroy 1 Spell or Trap Card |
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| 5DS3-EN009
| Worm Apocalypse
| Effect Monster | Light | Reptile | 1 | 300 | 200 | FLIP: Select and destroy 1 Spell or Trap Card. |
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| HA01-EN018
| Worm Barses
| Effect Monster | Light | Reptile | 3 | 1400 | 1500 | When this card is Normal Summoned, change 1 Defense Position monster to face-up Attack Position. |
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| TSHD-EN056
| Worm Call
| Spell | | Continuous | | | | If your opponent controls a monster(s), and you control no monsters, you can Special Summon 1 "Worm" Reptile-Type monster from your hand in face-down Defense Position. This effect can only be used once per turn. |
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| HA01-EN019
| Worm Cartaros
| Effect Monster | Light | Reptile | 4 | 1200 | 500 | FLIP: Add 1 Level 4 or lower Reptile-Type monster "Worm" from your Deck to your hand. |
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| HA01-EN020
| Worm Dimikles
| Effect Monster | Light | Reptile | 4 | 1700 | 1400 | FLIP: This card gains 300 ATK and DEF. |
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| DB1-EN208
| Worm Drake
| Normal Monster | Earth | Reptile | 4 | 1400 | 1500 | "Once this monster wraps itself around a victim, there is no escape." |
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| LON-004
| Worm Drake
| Normal Monster | Earth | Reptile | 4 | 1400 | 1500 | Once this monster wraps itself around a victim, there is no escape. |
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| HA01-EN021
| Worm Erokin
| Effect Monster | Light | Reptile | 6 | 2400 | 1200 | This card cannot be Special Summoned. Once per turn, select 1 face-up Reptile-Type "Worm" monster on the field and change it into face-down Defense Position. |
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| GLD3-EN034
| Worm Falco
| Effect Monster | Light | Reptile | 2 | 500 | 800 | Flip: Change all face-up Reptile-Type "Worm" monsters you control to face-down Defense Position, except this card. |
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| GLD3-EN035
| Worm Gulse
| Effect Monster | Light | Reptile | 4 | 1500 | 300 | Each time a face-down Defense Position monster is flipped face-up, place 1 Worm Counter on this card. This card gains 300 ATK for each Worm Counter on it. |
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| GLD3-EN036
| Worm Hope
| Effect Monster | Light | Reptile | 1 | 800 | 1500 | Flip: When this card is flipped face-up by an opponent's monster's attack, draw 1 card. when this card is sent from the field to the Graveyard, send 1 card from your hand to the Graveyard. |
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| STOR-EN095
| Worm Illidan
| Effect Monster | Light | Reptile | 5 | 2000 | 1800 | Each time a card is Set on your side of the field, place 1 Worm Counter on this card. You can remove 2 Worm Counters from this card to destroy 1 card your opponent controls. |
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| STOR-EN096
| Worm Jetelikpse
| Effect Monster | Light | Reptile | 3 | 1200 | 0 | FLIP: When this card is destroyed and sent to the Graveyard this turn, Special Summon it in Defense Position. |
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| STOR-EN097
| Worm King
| Effect Monster | Light | Reptile | 8 | 2700 | 1100 | This card can be Tribute Summoned in face-up Attack Position by Tributing 1 Reptile-Type "Worm" monster. You can Tribute 1 Reptile-Type "Worm" monster to select 1 card your opponent controls, and destroy it. |
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| HA02-EN023
| Worm Linx
| Effect Monster | Light | Reptile | 2 | 300 | 1000 | FLIP: If this card is face-up during the End Phase, draw 1 card. |
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| HA02-EN024
| Worm Millidith
| Effect Monster | Light | Reptile | 4 | 400 | 1600 | FLIP: You can equip this card to a monster your opponent controls as an Equip Card. Inflict 400 damage to the controller of the equipped monster during each Standby Phase. |
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| HA02-EN025
| Worm Noble
| Effect Monster | Light | Reptile | 6 | 1500 | 2400 | FLIP: If this card is flipped face-up by an opponent's monster's attack, inflict damage to your opponent equal to half the attacking monster's ATK. |
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| HA02-EN052
| Worm Opera
| Effect Monster | Light | Reptile | 2 | 400 | 800 | FLIP: All face-up monsters on the field lose 500 ATK, except Reptile-Type "Worm" monsters. |
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| HA02-EN053
| Worm Prince
| Effect Monster | Light | Reptile | 6 | 2200 | 400 | If this card destroys an opponent's monster by battle, you can add 1 Reptile-Type "Worm" monster from your Deck to your hand. Destroy this card during the End Phase if you do not control another Reptile-Type "Worm" monster. |
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| HA02-EN054
| Worm Queen
| Effect Monster | Light | Reptile | 8 | 2700 | 1100 | You can Tribute Summon this card in face-up Attack Position by Tributing 1 Reptile-Type "Worm" monster. Once per turn, you can Tribute 1 Reptile-Type "Worm" monster to Special Summon 1 Reptile-Type "Worm" monster from your Deck with a Level less than or equal to the Tributed monster. |
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| HA02-EN055
| Worm Rakuyeh
| Effect Monster | Light | Reptile | 4 | 2100 | 1200 | This card can only declare an attack the turn it was flipped face-up. If this card attacks, it is changed to face-down Defense Position at the end of the Battle Phase. |
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| HA03-EN022
| Worm Solid
| Effect Monster | Light | Reptile | 4 | 1000 | 1600 | This card gains 100 DEF for each Reptile-Type "Worm" monster in your Graveyard. If your opponent takes Battle Damage by attacking this card, select and destroy 1 Spell or Trap Card your opponent controls at the end of the Damage Step. |
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| HA03-EN023
| Worm Tentacles
| Effect Monster | Light | Reptile | 4 | 1700 | 700 | Once per turn, you can remove from play 1 Reptile-Type "Worm" monster from your Graveyard. If you do, this card can attack twice during this turn's Battle Phase. |
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| HA03-EN024
| Worm Ugly
| Effect Monster | Light | Reptile | 1 | 100 | 100 | If you use this card to Tribute Summon a Reptile-Type "Worm" monster, you can Special Summon this card from your Graveyard to your opponent's side of the field in face-up attack position. |
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| HA03-EN025
| Worm Victory
| Effect Monster | Light | Reptile | 7 | 0 | 2500 | FLIP: Destroy all face-up monsters on the field, except Reptile-Type "Worm" monsters. This card gains 500 ATK for each Reptile-Type "Worm" monster in your Graveyard. |
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| HA03-EN053
| Worm Warlord
| Effect Monster | Light | Reptile | 6 | 2350 | 1800 | This card cannot be Special Summoned. Negate the effects of Effect Monsters destroyed by battle with this card. If this card destroys an opponent's monster by battle, it can attack once again in a row. |
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| HA03-EN054
| Worm Xex
| Effect Monster | Light | Reptile | 4 | 1800 | 1000 | When this card is Normal Summoned, you can send 1 Reptile-type "Worm" monster from your Deck to the Graveyard. If you control a face-up "Worm Yagan", this card cannot be destroyed by battle. |
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| HA03-EN055
| Worm Yagan
| Effect Monster | Light | Reptile | 4 | 1000 | 1800 | If the only monster you control is "Worm Xex", you can Special Summon this card from your Graveyard in face-down Defense Position. If you do, remove it from play when it is removed from the field. When this card is flipped face-up, select 1 face-up monster your opponent controls, and return in to it's owner's hand. |
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| HA03-EN056
| Worm Zero
| Fusion/Effect Monster | Light | Reptile | 10 | ? | 0 | 2 or more Reptile-Type "Worm" monsters. For each Fusion Material Monster with a different name used to Fusion Summon this card, it gains 500 ATK, and also gains these effects:2+: Once per turn, you can select 1 Reptile-Type monster in your Graveyard, and Special Summon it in face-down Defense Position. 4+: You can remove from play 1 Reptile-Type monster from your Graveyard to send 1 monster on the field to the Graveyard. 6+: Once per turn, you can draw 1 card.
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