Viravolve Rabbit
You can Tribute this card: Special Summon 2 "Viravolve Rabbit" from your Deck. During your Standby Phase, if this card is in your GY: You can reveal 1 "Viravolve" monster in your hand; shuffle this card into your Deck. Cannot be used as Fusion, Synchro, Xyz or Link Material, except for the Fusion, Synchro, Xyz, or Link Summon of a “Viravolve”, or “S.S” monster.
Viravolve Keylogger
If a “Viravolve” monster is Normal or Special Summoned: You can Special Summon this card from your hand. Once per turn, you can roll a six-sided die. Reveal cards from the top of your Deck equal to the roll and Special Summon 1 Level 1 "Viravolve" monster from among them, except "Viravolve Keylogger". Shuffle the rest into the Deck.
Viravolve Wurm
If a monster you control inflicts damage to your opponent: You can reveal this card in your hand, and if you do, you can reveal 1 “Viravolve Database” from your Deck; Special Summon this card, and if you do, you can activate the revealed card, if able. You can only use this effect of “Viravolve Wurm” once per turn.
Viravolve Doom
If your opponent declares an attack (Quick Effect): You can Special Summon this card from your hand, and if you do, this card becomes the new attack target, also this card cannot be destroyed by battle this turn. If your opponent activates a card effect that targets exactly 1 card you control, and this card is a viable target (Quick Effect): You can Special Summon this card from your hand, and if you do, this card becomes the new target.
Viravolve Demon
If you Xyz Summon a Rank 1 DARK Cyberse monster: You can attach this card from your hand to it as Xyz material. An Xyz monster with this card as material gains the following effect:
● When this card inflicts damage to your opponent, inflict 300 extra damage for each "Viravolve Demon" attached to this card.