Roman Keys - XXXVI
Level 4 LIGHT Thunder/Effect Monster
(Quick Effect): You can banish this card from your GY; Fusion Summon any number of "Roman Keys" Fusion monsters from your Extra Deck, by banishing "Roman Keys" monsters from the GYs as the materials, but you cannot Summon monsters whose total Levels exceed the total Levels of the materials this way. You can only use this effect of "Roman Keys - XXXVI" once per turn.
ATK 1400/DEF 1600
Roman Keys - VI
Level 4 LIGHT Thunder/Effect Monster
This card's Level is doubled during the turn it is Summoned. When this card is Summoned: You can return up to 5 "Roman Keys" monsters from your GY into the Deck, and if you do, apply these effects (simultaneously), based on the number of cards returned to the Deck this way.
● 3+: Draw 1 card.
● 5: Add 1 "Roman Keys" monster from your Deck to your hand.
ATK 1400/DEF 1000
Roman Keys - XII
Level 4 LIGHT Thunder/Effect Monster
This card's Level is doubled during the turn it is Summoned. When this card is Summoned: It gains 1200 ATK/DEF. "Roman Keys" monsters on the field cannot be targeted or destroyed by your opponent's card effects.
ATK 1600/DEF 1000
Roman Keys - XVIII
Level 4 LIGHT Thunder/Effect Monster
(Quick Effect): You can banish this card you control; Fusion Summon any number of "Roman Keys" Fusion monsters from your Extra Deck, using "Roman Keys" monsters from your field as the materials, which can also include 1 face-up monster your opponent controls, but you cannot Summon monsters whose total Levels exceed the total Levels of the materials this way. You can only use this effect of "Roman Keys - XVIII" once per turn.
ATK 1500/DEF 1500
Roman Keys - XXIV
Level 4 LIGHT Thunder/Effect Monster
This card's Level is doubled during the turn it is Summoned. When this card is Summoned: You can Special Summon 1 "Roman Keys" monster from your hand or Deck, except "Roman Keys - XXIV". You cannot Special Summon monsters from the Extra Deck the turn you use this effect, except "Roman Keys" monsters.
ATK 1600/DEF 1800
Roman Keys - XXX
Level 4 LIGHT Thunder/Effect Monster
(Quick Effect): You can banish this card from your hand or field; Fusion Summon any number of "Roman Keys" Fusion monsters from your Extra Deck, using "Roman Keys" monsters from your hand or field as the materials, but you cannot Summon monsters whose total Levels exceed the total Levels of the materials this way. You cannot Special Summon monsters from the Extra Deck the turn you use this effect, except "Roman Keys" monsters. You can only use this effect of "Roman Keys - XXX" once per turn.
ATK 1500/DEF 500