Alien Deck Breakdown

WATER

2 monsters with different names You can banish 1 monster from your face-up field or GY with 2000 or less ATK, then target 1 face-up monster on the field; make its ATK become equal to the original ATK of the monster banished to activate this effect (until the end of this turn), then if you banished a monster that was originally Reptile, draw 1 card. You can only use this effect of "Haggard Lizardose" once per turn.

LIGHT 8

If this card is in your GY: You can Tribute 2 monsters; Special Summon this card. If your opponent adds a card(s) to their hand (except during the Draw Phase or Damage Step): You can send 1 random card from their hand to the GY. If a monster(s) your opponent controls is sent to the GY (except during the Damage Step): You can add 1 LIGHT or DARK Reptile monster from your Deck or GY to your hand, except "Aron, the Ogdoadic King". You can only use each effect of "Aron, the Ogdoadic King" once per turn.

LIGHT 8

If this card is in your GY: You can Tribute 1 monster; Special Summon this card, then your opponent can Special Summon 1 monster from their GY, but negate its effects. If this card is Special Summoned: You can target 1 Level 4 or lower "Ogdoadic" monster in your GY; Special Summon it, but banish it when it leaves the field. You can only use each effect of "Keurse, the Ogdoadic Light" once per turn.

Spell Normal

Discard 1 card. Select 4 Reptile-Type monsters from your Deck and send them to the Graveyard.

DARK 4

If you control a DARK Reptile monster: You can Special Summon this card from your hand, then, if your opponent controls any monsters with 0 ATK, you can Special Summon up to an equal number of "Reptilianne" monsters from your hand. You can only use this effect of "Reptilianne Coatl" once per turn. If this card you control would be used as Synchro Material for a Reptile monster, you can treat it as a non-Tuner.

LIGHT 10

If this card is in your GY: You can Tribute 3 monsters; Special Summon this card. Once, while this card is face-up on the field (Quick Effect): You can send all monsters from the field to the GY, except face-up monsters Special Summoned from the GY. You can only use each effect of "Ogdoabyss, the Ogdoadic Overlord" once per turn.

DARK 2

During the Main Phase, if you have a Reptile monster in your GY (Quick Effect): You can send this card from your hand to the GY, then target 1 face-up monster your opponent controls; change its ATK to 0. If your opponent controls a monster with 0 ATK: You can Special Summon this card from your GY. You can only use 1 "Reptilianne Nyami" effect per turn, and only once that turn.

DARK 4

You can send this card from your hand to the GY; send 1 LIGHT Reptile monster from your Deck to the GY. If this card is Normal or Special Summoned: You can add 1 "Ogdoadic" Spell/Trap from your Deck to your hand. You can only use each effect of "Nauya, the Ogdoadic Remnant" once per turn.

LIGHT

2 Reptile monsters (Quick Effect): You can discard 1 monster; place A-Counters equal to its original Level on face-up monster(s) on the field, distributed as you wish. If this card is destroyed by battle or card effect and sent to the GY: You can Special Summon non-Link Reptile monsters with different names from your GY, up to the number of monsters your opponent controls with A-Counters. You can only use each effect of "Alien Shocktrooper M-Frame" once per turn.

DARK 2

If this card is in your hand and all monsters you control are face-up Reptile monsters (min. 1): You can target 1 face-up monster your opponent controls; change its ATK to 0, and if you do, Special Summon this card, then take damage equal to that monster's original ATK. If this card is sent to the GY as Synchro Material: You can target up to 2 face-up monsters on the field; change their ATK to 0. You can only use 1 "Reptilianne Lamia" effect per turn, and only once that turn.

DARK 8

If this card is in your GY: You can Tribute 2 monsters; Special Summon this card. If a monster(s) is Special Summoned from your opponent's GY (except during the Damage Step): You can send 1 card they control to the GY. If a monster(s) is sent from your opponent's hand or Deck to the GY (except during the Damage Step): You can Special Summon 1 LIGHT or DARK Reptile monster from your GY, except "Amunessia, the Ogdoadic Queen". You can only use each effect of "Amunessia, the Ogdoadic Queen" once per turn.

DARK

2+ Level 8 monsters Once per turn, during your Standby Phase: You can attach 1 card from your opponent's GY to this card as material. You can only use each of the following effects of "Number 1: Infection Buzzking" once per turn. If this card is Xyz Summoned: You can look at your opponent's Extra Deck and send 1 card from it to the GY. You can detach 1 material from this card, then target 1 card your opponent controls; destroy it, then if you destroyed a face-up monster, inflict damage to your opponent equal to half the ATK it had on the field.

WIND 3

If your opponent Special Summons a monster(s) face-up (except during the Damage Step): You can discard this card, then target 1 of those face-up monsters; negate its effects until the end of this turn, also if that face-up monster leaves the field this turn, its controller takes damage equal to its original ATK. You can only use this effect of "Ghost Mourner & Moonlit Chill" once per turn.

Spell Continuous

You can send 1 monster from your hand or field to the GY, then target 1 Reptile monster in your GY with a different original Attribute than that monster; Special Summon it. During the Main Phase, if a monster is sent to your opponent's GY: You can send 1 Reptile monster from your Deck to the GY. You can only use each effect of "Ogdoadic Serpent Strike" once per turn.

Spell Normal

Remove from play 1 "Reptilianne" monster from your Graveyard. Special Summon 2 "Reptilianne Tokens" (Reptile-Type/EARTH/Level 1/ATK 0/DEF 0) to your side of the field.

Spell Field

If a face-up Reptile monster(s) you control is destroyed by battle or an opponent's card effect: You can target 1 card your opponent controls; send it to the GY. If this card in the Field Zone is destroyed by your opponent's card effect: You can send cards from the top of your opponent's Deck to the GY, equal to the number of Reptile monsters with different names in your GY. You can only use each effect of "Ogdoadic Origin" once per turn.

Spell Normal

Send 1 card from your hand to the GY and activate 2 of these effects, in sequence; ● Add 1 "Reptilianne" monster from your Deck to your hand. ● Add 1 "Reptilianne" Spell/Trap from your Deck to your hand, except "Reptilianne Ramifications". ● Change the ATK of 1 monster your opponent controls to 0. You can only activate 1 "Reptilianne Ramifications" per turn.

FIRE

2+ monsters, including an Insect, Plant, or Reptile monster If your opponent activates a monster effect (except during the Damage Step): You can activate this effect; neither player can activate the effects of monsters in the hand this turn. If this card is in your GY: You can target 1 Insect, Plant, or Reptile monster you control; place it on the bottom of the Deck, and if you do, Special Summon this card, also you cannot Special Summon for the rest of this turn, except Insect, Plant, or Reptile monsters. You can only use each effect of "Ragnaraika Chain Coils" once per turn.

WATER

2+ Insect, Plant, and/or Reptile monsters You can banish up to 2 monsters from your GY, then target that many Spells/Traps your opponent controls; destroy them. If this card is in your GY: You can target 1 Insect, Plant, or Reptile monster you control; place it on the bottom of the Deck, and if you do, Special Summon this card, also you cannot Special Summon for the rest of this turn, except Insect, Plant, or Reptile monsters. You can only use each effect of "Ragnaraika Selene Snapper" once per turn.

Spell Normal

Send 1 Reptile monster from your Deck to the GY, then if you have 5 or more Reptile monsters with different names in your GY, you can Special Summon 1 Reptile monster from your GY. You can only activate 1 "Ogdoadic Water Lily" per turn.

LIGHT 4

You can send this card from your hand to the GY; send 1 DARK Reptile monster from your Deck to the GY. If you control no monsters, or you control an "Ogdoadic" monster: You can Special Summon this card from your GY, but banish it when it leaves the field, also you cannot Special Summon monsters, except Reptile monsters, while this card is face-up in the Monster Zone. You can only use each effect of "Nunu, the Ogdoadic Remnant" once per turn.

DARK 8

If this card is in your GY: You can Tribute 1 monster; Special Summon this card, then your opponent can add 1 monster from their GY to their hand. If this card is Special Summoned: You can target 2 of your banished monsters, including a Reptile monster; return them to the GY. You can only use each effect of "Aleirtt, the Ogdoadic Dark" once per turn.

EARTH

2+ Insect, Plant, and/or Reptile monsters If a monster(s) is Special Summoned from your opponent's Deck and/or Extra Deck (except during the Damage Step): You can destroy 2 monsters on the field. If this card is in your GY: You can target 1 Insect, Plant, or Reptile monster you control; place it on the bottom of the Deck, and if you do, Special Summon this card, also you cannot Special Summon for the rest of this turn, except Insect, Plant, or Reptile monsters. You can only use each effect of "Ragnaraika Stag Sovereign" once per turn.

DARK

2 monsters, including a Reptile monster If this card is Link Summoned: You can target 1 face-up monster your opponent controls; change its ATK to 0. During your Main Phase, if your opponent controls a monster(s) with 0 ATK: You can add Reptile monsters with different names from your Deck to your hand, up to the number of monsters your opponent controls with 0 ATK, also, you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Reptile monsters. You can only use each effect of "Reptilianne Echidna" once per turn.

DARK 3

You can reveal this card in your hand; your opponent randomly chooses 1 card from your entire hand, then you discard the chosen card. Then, if the discarded card was not "Danger!? Tsuchinoko?", Special Summon 1 "Danger!? Tsuchinoko?" from your hand, and if you do, draw 1 card. If this card is discarded: You can Special Summon this card. You can only use this effect of "Danger!? Tsuchinoko?" once per turn.

DARK 10

If a monster(s) is sent from the hand or Deck to the GY, while this card is in your GY (except during the Damage Step): You can Special Summon this card, also you cannot Special Summon monsters until the end of the next turn, except Reptile monsters. If you control this card that was Special Summoned from the GY: You can target 1 monster in your GY, except "Nephilabyss, the Ogdoadic Overlord"; Special Summon it. You can only use each effect of "Nephilabyss, the Ogdoadic Overlord" once per turn.

DARK 8

1 Reptile Tuner + 1+ non-Tuner monsters If this card was Synchro Summoned using only Reptile monsters as material, it cannot be destroyed by battle or card effects. Once per Chain, when your opponent activates a monster effect, except during the Damage Step (Quick Effect): You can target 1 face-up monster your opponent controls; change its ATK to 0. If this Synchro Summoned card you control is sent to your GY by an opponent's card: You can add 1 Reptile monster from your Deck to your hand.

Spell Quick

Tribute 1 Reptile monster; for every 2 Levels that Tributed monster had on the field, Special Summon up to 1 "Ogdoadic Token" (Reptile/DARK/Level 2/ATK 0/DEF 0). During your Main Phase: You can banish this card from your GY, then target 1 of your banished Reptile monsters; shuffle it into the Deck, then you can send 1 Reptile monster from your Deck to the GY. You can only use each effect of "Ogdoadic Daybreak" once per turn.

Spell Normal

Destroy all Spell and Trap Cards your opponent controls.

DARK 4

If this card is sent from the field to the GY, or Special Summoned from the GY: You can activate this effect; your opponent draws 1 card, and if they do, you add 1 "Ogdoadic" monster from your Deck to your hand, except "Zohah, the Ogdoadic Boundless", then, each player sends 1 card from their hand to the GY. If this card is in your GY: You can send 1 card from your hand to the GY; add this card to your hand. You can only use each effect of "Zohah, the Ogdoadic Boundless" once per turn.

LIGHT

2+ Reptile monsters Monsters your opponent controls with A-Counters are changed to Defense Position, also neither player can activate their effects. You can only use each of the following effects of "Cosmic Slicer Zer'oll" once per turn. If this card is Link Summoned: You can add 1 card from your Deck to your hand that has an effect that places A-Counter(s). You can remove 2 A-Counters from anywhere on the field; immediately after this effect resolves, Normal Summon 1 Reptile monster.

FIRE 3

"Monster Egg" + "Hinotama Soul"