Changes

The [[LIGHT]] [[Reptile]]-[[Type]] "Worm" monsters were introduced as part of the early [[Duel Terminal]] sets. They are used by [[Callisto]] in ''[[Yu-Gi-Oh! 5D's World Championship 2009: Stardust Accelerator]]''.

The [[Insect]]-Type "Worm" monsters have effects that [[mill]] the opponent's Deck. They are used by [[Tetsu Trudge|Trudge]] during his time as a [[Shadow Drone]] in the ''[[Yu-Gi-Oh! 5D's]]'' anime.

==Insect-Type Worms==These Worms are a series of Insect-Type monsters, which focus on milling the opponent's Deck. Visually, they resemble caterpillars and centipedes.

===List of Insect-Type Worms===

Having Insect support cards like "[[Lair Wire]]" and "[[Insect Neglect]]" while also having "[[Doom Dozer]]" and "[[Aztekipede, the Worm Warrior|Aztekipede]]" in your Deck means you will rely heavily on having Insect-Type monsters in your Graveyard which you can remove from play. Therefore, it would be a good idea to use cards that mill both players to steadily replenish your Graveyard's stock of Insect-Type monsters. Cards like "[[D.D.R. - Different Dimension Reincarnation]]" can be used to bring back monsters like "Shield Worm" and "Warm Worm" in late game to force your opponent to send away even more cards.

Since you need to send insect monsters to the Graveyard anyways, it maybe a good idea to use some that benefit you from being in the Graveyard, like "[[Skull-Mark Ladybug]]". This Deck concentrates on using "[[Warm Worm]]", "[[Needle Worm]]" and "[[Shield Worm]]" to mill your opponent's Deck. "[[Chainsaw Insect]]" is used for a beatstick and to force your opponent to draw. "[[Doom Dozer]]" and "[[Aztekipede, the Worm Warrior]]" can be used with "[[Robbin' Zombie]]" to send more cards from the Deck to the Graveyard. "[[Assault on GHQ]]" can be used on the used up "Needle Worm" or on a "Warm Worm".

==Reptile-Type Worms==These Worms are a collection of [[LIGHT]]-[[Attribute]] [[Reptile]]-[[Type]] monsters which focus heavily on [[Flip effect]]s. They were introduced in ''[[Duel Terminal - Synchro Awakening!!]]'' and even have their own set, ''[[Duel Terminal - Invasion of Worms!!]]''. The name of each Worm begins with a different letter of the alphabet, including all letters from A to Z. Their effects also seem to get more complicated as they progress in the alphabet. For example, "[[Worm Apocalypse]]" has an effect only a few words long. However, "[[Worm Yagan]]'s" effect is 56 words long and much less straightforward. "[[Worm Zero]]", the "boss" monster of Worms features several powerful effects and is a Fusion Monster.

The storyline establishes that the "[[Ally of Justice]]" monsters were created specifically to combat the "Worms" (specifically the LIGHT Reptile-Type "Worms") through a joint effort of 4 Duel Terminal clans. This is apparent through several crossover cards within the "Ally of Justice" series.

Later on in the battle, captured Worms were converted into "[[Ally of Justice]]A.O.J." monsters (i.e., "[[Ally of Justice Enemy Catcher]]"), which led to the "Mist Valley" clan falling out of favor with the other alliance members. They halted support for the "Ally of Justice" project and continued fighting the battle alone, though this decision was short-lived. The legendary "Dragunity" warriors returned to defend the Mist Valley, once their home, and joined forces with the clan taking up residence there. The greatest weapon of the "Worms" was "[[Worm Zero]]", which traded the threat of endless waves of "Worms" for the crushing presence of "Zero", whose arrival on the Duel Terminal world was enough to severely disturb time and space.

Worms are one of the largest archetypes (in terms of number of members), but they currently have only 2 non-monster support cards: "[[Worm Call]]" and "[[W Nebula MeteorMeteorite]]". "[[W Nebula Meteor]]" can provide you with excellent draw power as well as the ability to use and recycle the Worm's effects. It is also the easiest method to Special Summon "[[Worm Victory]]", "[[Worm King]]", and "[[Worm Queen]]" from your Deck.

"[[Worm Zero]]" potentially boasts the highest ATK of all "Worms" (with "[[Worm Victory]]"), gaining 500 ATK for every Reptile-Type Worm used for its fusion, and gains powerful effects determined by how many [[Fusion Material]]s were used.

"[[Worm Queen]]", "[[Worm Cartaros]]", "[[Worm Xex]]" and "[[Worm Prince]]" have powerful Deck thinning and monster searching effects. The effect of "Worm Queen" is a toolbox effect, similar to that of "[[Lonefire Blossom]]". The Deck thinning effect of "Worm Xex" is similar to that of "[[Armageddon Knight]]".

The Deck revolves around abusing the effects of "[[W Nebula Meteorite]]". Opening with with "[[Worm Xex]]" or "[[Worm Cartaros]]" along with this card can yield huge card advantage early on to make up for the Deck's relatively slow play. If you Summon "[[Worm Yagan]]" along with "Xex", you can activate "Nebula" on your opponent's turn, using "Yagan" to return one of their monsters to their hand. During the End Phase, you get to draw 1 card for each Reptile monster flipped face down by "Nebula" and can Special Summon a Level 7 or higher LIGHT Monster (notably "[[Worm King]]", "[[Worm Queen]]", or "[[Worm Victory]]").