"Nephthys" (ネフティス, Nefutisu) is an archetype comprised primarily of FIRE Winged Beast and WIND Spellcaster monsters. The original member, "Sacred Phoenix of Nephthys", debuted in Flaming Eternity, though the archetype didn't receive its first support until Deck Build Pack: Hidden Summoners.
The Winged Beast "Nepthys" monsters (as well as the Wyrm "Metaphys Nephthys") are based off of Nephthys, the Egyptian goddess of death. The all-female "Nephthys" Spellcasters seem to be her followers.
Similar to "Fire King", this archetype focuses primarily on destroying its controller's cards on the field and/or hand to trigger various effects. Spellcaster "Nephthys" monsters released in "Deck Build Pack: Hidden Summoners" have two common effects; the first effect is destroying 1 card in your hand during your Main Phase, in which if you do, triggers the next effect. The second effect is activated during your next Standby Phase after they are destroyed by a card effect and is sent to the GY, which is ranging from searching cards to Special Summoning.
Another playing style is resurrecting themselves from the GY, as being reflected by the ability of a mythological phoenix. The Main Deck Winged-Beast "Nephthys" monsters all have effects to Special Summon themselves from the GY, and some of them trigger the effects to destroy cards afterwards. This playing style is also supported through Ritual Summoning. Their Link Monsters - "Nephthys, the Sacred Flame" unlocks its whole abilities if it was Link Summoned by using Ritual Monsters, and "Nephthys, the Sacred Preserver" could gather required sources for Ritual Summoning.
|Main Phase||Standby Phase|
|Chronicler||Add 1 "Nephthys" card from your GY to your hand, except "Chronicler of Nephthys"||Add 1 "Nephthys" card from your GY to your hand, except "Chronicler of Nephthys".|
|Defender||Special Summon 1 Level 4 or lower "Nephthys" monster from your hand, except "Defender of Nephthys"||Destroy 1 "Nephthys" monster in your Deck, except "Defender of Nephthys".|
|Disciple||Add 1 "Nephthys" monster from your Deck to your hand, except "Disciple of Nephthys"||Add 1 "Nephthys" Spell/Trap from your Deck to your hand.|
|Matriarch||Special Summon 1 Level 4 or lower "Nephthys" monster, except "Matriarch of Nephthys", from your GY in defense position and negating its effects||Special Summon itself.|