Vassal Deck Breakdown
Main: 40
Caius the Mega Monarch
ATK:
2800
DEF:
1000
You can Tribute Summon this card by Tributing 1 Tribute Summoned monster. If this card is Tribute Summoned: Target 1 card on the field; banish it, and if you do, inflict 1000 damage to your opponent, then, if it is a DARK Monster Card, banish all cards with that name from the hand, Main Deck, Extra Deck, and GY of the player who controlled it. If this card was Tribute Summoned by Tributing a DARK monster, add this additional effect. ● You can target 2 cards, instead.
Ehther the Heavenly Monarch
ATK:
2800
DEF:
1000
You can Tribute Summon this card by Tributing 1 Tribute Summoned monster. If this card is Tribute Summoned: You can send 2 "Monarch" Spell/Trap Cards with different names from your hand and/or Deck to the Graveyard, and if you do, Special Summon 1 monster with 2400 or more ATK and 1000 DEF from your Deck, but return it to the hand during the End Phase. During your opponent's Main Phase, if this card is in your hand: You can banish 1 "Monarch" Spell/Trap Card from your Graveyard; immediately after this effect resolves, Tribute Summon this card (this is a Quick Effect).
Erebus the Underworld Monarch
ATK:
2800
DEF:
1000
You can Tribute Summon this card by Tributing 1 Tribute Summoned monster. If this card is Tribute Summoned: You can send 2 "Monarch" Spell/Trap Cards with different names from your hand and/or Deck to the Graveyard, and if you do, shuffle 1 card from your opponent's hand (at random), Graveyard, or their side of the field into the Deck. Once per turn, during either player's Main Phase, if this card is in your Graveyard: You can discard 1 "Monarch" Spell/Trap Card, then target 1 monster in your Graveyard with 2400 or more ATK and 1000 DEF; add it to your hand.
Kuraz the Light Monarch
ATK:
2400
DEF:
1000
When this card is Normal or Special Summoned: You can target up to 2 cards on the field; destroy those targets, and if you do, each player can draw 1 card for each of the cards they controlled that was destroyed by this effect. This card cannot attack during the turn it is Normal or Special Summoned.
Mithra the Thunder Vassal
ATK:
800
DEF:
1000
If this card is in your hand: You can activate this effect; you cannot Special Summon monsters from the Extra Deck for the rest of this turn, also Special Summon this card, and if you do, Special Summon 1 "Vassal Token" (Thunder-Type/LIGHT/Level 1/ATK 800/DEF 1000) to your opponent's field in Defense Position. If this card is Tributed for a Tribute Summon: You can activate this effect; you can Tribute Summon 1 monster during your Main Phase this turn, in addition to your Normal Summon/Set this turn. (You can only gain this effect once per turn.) You can only use each effect of "Mithra the Thunder Vassal" once per turn.
Proof of Pruflas
ATK:
100
DEF:
100
If you control no Special Summoned monsters: You can Special Summon this card from your hand, also you cannot Special Summon other monsters for the rest of this turn. You can only use this effect of "Proof of Pruflas" once per turn. If this card is Normal or Special Summoned, you can (except during the Damage Step): Immediately after this effect resolves, Tribute Summon 1 monster.
Anchamoufrite
ATK:
1800
DEF:
0
[ Pendulum Effect ] If you have no cards in your Extra Deck except "Anchamoufrite": You can destroy this card, then draw 1 card. You can only use this effect of "Anchamoufrite" once per turn. [ Monster Effect ] Cannot be Normal Summoned/Set. Must be Special Summoned (from your face-up Extra Deck) by having no cards in your Extra Deck except "Anchamoufrite". You can only Special Summon "Anchamoufrite" once per turn this way. If this face-up card in the Monster Zone leaves the field, banish it.
Domain of the True Monarchs
While you have no cards in your Extra Deck and you are the only player that controls a Tribute Summoned monster, your opponent cannot Special Summon monsters from the Extra Deck. If a Tribute Summoned monster you control attacks an opponent's monster, it gains 800 ATK during damage calculation only. Once per turn: You can reduce the Level of 1 monster with 2800 ATK and 1000 DEF in your hand by 2 until the end of this turn (even after they are Summoned/Set, and even if this card leaves the field).
Pantheism of the Monarchs
Send 1 "Monarch" Spell/Trap Card from your hand to the Graveyard; draw 2 cards. You can banish this card from your Graveyard; reveal 3 "Monarch" Spell/Trap Cards from your Deck, your opponent chooses 1 for you to add to your hand, and you shuffle the rest back into your Deck. You can only use this effect of "Pantheism of the Monarchs" once per turn.
Return of the Monarchs
You cannot Special Summon monsters from the Extra Deck. When you Tribute Summon a monster: You can activate 1 of these effects; ● Add, from your Deck to your hand, 1 monster with 2400 ATK and 1000 DEF with a different name from that Tribute Summoned monster. ● Add, from your Deck to your hand, 1 monster with 2800 ATK and 1000 DEF with a different name from that Tribute Summoned monster. The Tribute Summoned monster must be face-up on the field to activate and to resolve this effect. You can only use this effect of "Return of the Monarchs" once per turn.
The Monarchs Stormforth
Once during this turn, if you would Tribute a monster for a Tribute Summon, you can Tribute 1 monster your opponent controls even though you do not control it. You can only activate 1 "The Monarchs Stormforth" per turn. During the turn you activate this card, you cannot Special Summon monsters from the Extra Deck.
The Prime Monarch
Once per turn: You can target 2 "Monarch" Spell/Trap Cards in your Graveyard; shuffle them into the Deck, then draw 1 card. If this card is in your Graveyard: You can banish 1 other "Monarch" Spell/Trap Card from your Graveyard; Special Summon this card in Defense Position as a Normal Monster (Fairy-Type/LIGHT/Level 5/ATK 1000/DEF 2400). (This card is NOT treated as a Trap Card.) You can only use this effect of "The Prime Monarch" once per turn.