You can Ritual Summon this card with any "Vendread" Ritual Spell. Once per battle, if this card battles an opponent's monster, during damage calculation (Quick Effect): You can banish 1 Zombie monster from your GY; this card gains 300 ATK. If this Ritual Summoned card is sent to the GY: You can add 1 Ritual Spell from your Deck to your hand, and if you do, send 1 "Vendread" monster from your Deck to the GY. You can only use this effect of "Revendread Slayer" once per turn.
If this card is sent to the GY: You can banish this card from your GY; add 1 Level 5 or higher Zombie monster from your Deck to your hand, or, if "Zombie World" is in a Field Zone, you can Special Summon it from your Deck instead, also, in either case, you cannot Special Summon monsters for the rest of this turn, except Zombie monsters. You can only use this effect of "Glow-Up Bloom" once per turn.
You can Normal Summon/Set this card without Tributing, but its original ATK becomes 1900. You can Tribute 3 monsters to Tribute Summon (but not Set) this card. If Summoned this way: Destroy all cards your opponent controls.
1 Tuner + 1+ non-Tuner monsters Gains 100 ATK/DEF for each Zombie monster on the field and in the GYs. When another Zombie monster is destroyed by battle: You can Special Summon 1 Zombie monster from either GY to your field. You can only use this effect of "Red-Eyes Zombie Necro Dragon" once per turn.
If this card in your possession is destroyed by an opponent's card (by battle or card effect) and sent to your GY: You can Special Summon this card, but banish it when it leaves the field. A "Vendread" monster Ritual Summoned using this card on the field gains this effect. You can only use the preceding effect of "Vendread Revenants" once per turn. ● Once per turn (Quick Effect): You can target 1 Special Summoned monster your opponent controls; banish it.
2 monsters with the same Attribute but different Types Your opponent cannot target this card, or monsters on the field with the same Attribute as this card, with card effects. Once per turn (Quick Effect): You can declare 1 Attribute; this card becomes that Attribute until the end of this turn.
1 "Fabled" Tuner + 1 or more non-Tuner monsters While you and your opponent have the same number of cards in hand, negate all Spell, Trap and Effect Monster effects activated by your opponent, and destroy that Spell/Trap/Monster.
This card can be used to Ritual Summon any "Vendread" Ritual Monster from your hand or GY. You must also Tribute monsters from your hand or field, and/or banish Zombie monsters from your GY, whose total Levels equal or exceed the Level of the Ritual Monster you Ritual Summon. If "Revendread Slayer(s)" you control would be destroyed by battle or card effect, you can banish this card from your GY instead.