You can Ritual Summon this card with any "Nekroz" Ritual Spell Card. Must be Ritual Summoned without using any Level 9 monsters, and cannot be Special Summoned by other ways. You can only use each of these effects of "Zefragottoms, Nekroz of Sword Deity" once per turn. ● You can discard this card; add to your hand, 1 "Nekroz" or "Zefra" monster from your Graveyard or 1 face-up "Zefra" monster from your Extra Deck, except "Zefragottoms, Nekroz of Sword Deity". ● If your opponent controls more total Ritual, Fusion, Synchro, and Xyz Monsters than you do: You can destroy any number of Fusion, Ritual, Synchro, or Xyz Monsters your opponent controls, up until both players control the same total number of Fusion, Ritual, Synchro, and Xyz Monsters. You cannot conduct your Battle Phase the turn you activate this effect.