Butterspy Deck Breakdown

LIGHT

2 Level 4 Warrior-Type monsters Once per turn: You can detach 2 Xyz Materials from this card; this card's ATK becomes double its original ATK until your opponent's next End Phase.

WATER 8

You can Special Summon this card (from your hand) to your opponent's field in Attack Position, by Tributing 1 monster they control. If your opponent controls a "Kaiju" monster, you can Special Summon this card (from your hand) in Attack Position. You can only control 1 "Kaiju" monster. When your opponent activates a card or effect, except "Gameciel, the Sea Turtle Kaiju" (Quick Effect): You can remove 2 Kaiju Counters from anywhere on the field; negate the activation, and if you do, banish that card.

WIND

2 Level 4 monsters Once per turn (Quick Effect): You can detach 1 material from this card, then target 1 Spell/Trap on the field; destroy it.

Spell Normal

Special Summon 1 Warrior monster from your hand or GY, but if you Special Summoned a non-"Heroic" monster by this effect, negate its effects, also it cannot attack. If your LP are 500 or less: You can banish this card from your GY, then target 1 face-up monster you control; it gains 500 ATK for each "Heroic" card you currently control, and for each "Heroic" card attached to Xyz Monsters you currently control. You can only activate 1 "Heroic Call" per turn.

EARTH

2 Level 1 Warrior monsters The first time each Warrior monster you control would be destroyed by battle or card effect each turn, it is not destroyed. You can only use each of the following effects of "Heroic Champion - Jarngreipr" once per turn. You can detach 2 materials from this card, then target 1 Level/Rank 4 Warrior monster in your GY; Special Summon it, and if you do, this card gains ATK equal to that monster's original ATK. When an attack is declared involving your opponent's monster: You can gain LP equal to half its ATK.

EARTH

3 Level 4 Warrior-Type monsters Once per turn, during either player's turn, when a Trap Card is activated: You can detach 1 Xyz Material from this card; negate the activation, and if you do, destroy it, then this card gains 500 ATK.

LIGHT

3 Level 5 LIGHT monsters You can also Xyz Summon this card by using a Rank 4 "Utopia" monster you control as material. (Transfer its materials to this card.) Cannot be used as material for an Xyz Summon. If this card battles, your opponent cannot activate cards or effects until the end of the Damage Step. Once per Chain, during damage calculation, if this card battles an opponent's monster while this card has a "Utopia" Xyz Monster as material (Quick Effect): You can detach 2 materials from this card; this card's ATK becomes 5000 during that damage calculation only.

EARTH 4

Once per turn, if this card is in Attack Position: You can discard 1 "Heroic" card; you cannot Special Summon monsters for the rest of this turn, except "Heroic" monsters, also Special Summon 1 "Heroic" monster from your Deck, and if you do, change this card to Defense Position. When you take damage while this card is in your Graveyard: You can Special Summon this card in Attack Position. You can only use this effect of "Heroic Challenger - Thousand Blades" once per turn.

FIRE 3

When a card or effect is activated that includes any of these effects (Quick Effect): You can discard this card; negate that effect. ● Add a card from the Deck to the hand. ● Special Summon from the Deck. ● Send a card from the Deck to the GY. You can only use this effect of "Ash Blossom & Joyous Spring" once per turn.

EARTH

2 Level 4 Warrior-Type monsters Once per turn, when a Level 4 or lower monster(s) is Special Summoned to your opponent's side of the field (except during the Damage Step): You can detach 1 Xyz Material from this card; destroy that Special Summoned monster(s).

WIND

2+ monsters with different names, except Tokens You can only control 1 "Apollousa, Bow of the Goddess". The original ATK of this card becomes 800 x the number of Link Materials used for its Link Summon. Once per Chain, when your opponent activates a monster effect (Quick Effect): You can make this card lose exactly 800 ATK, and if you do, negate the activation.

LIGHT

2 Level 4 Warrior monsters Your opponent cannot target monsters for attacks, except this one. You can only use each of the following effects of "Heroic Champion - Claivesolish" once per turn. You can pay LP so that you only have 500 left; at the start of the Battle Phase this turn, double the ATK of 1 monster you control. When an attack is declared involving your opponent's monster: You can detach 1 material from this card, then target 1 face-up monster your opponent controls; this card gains ATK equal to that monster's ATK until the end of this turn.

Spell Normal

Add 1 "Heroic" monster from your Deck to your hand. If your LP are 500 or less: You can banish this card from your GY, then target 1 "Heroic" card in your GY; add it to your hand. You can only use each effect of "Heroic Envoy" once per turn.

LIGHT

3 Level 4 LIGHT monsters You can also Xyz Summon this card by using a "Number 39: Utopia" you control as the Xyz Material. (Xyz Materials attached to that monster also become Xyz Materials on this card.) If your opponent's LP is at least 3000 higher than yours: You can detach 3 Xyz Materials from this card and pay LP so that you only have 10 left; destroy as many Special Summoned monsters your opponent controls as possible, and if you do, banish them, then inflict 300 damage to your opponent for each monster banished.

LIGHT

2 Level 4 monsters When a monster declares an attack: You can detach 1 material from this card; negate the attack. If this card is targeted for an attack, while it has no material: Destroy this card.

Spell Normal

If you control no face-up cards: Activate 1 of these effects; ● Destroy all Attack Position monsters your opponent controls. ● Destroy all Spells and Traps your opponent controls. You can only activate 1 "Lightning Storm" per turn.

Spell Quick

Target 1 monster in your opponent's GY; banish it, and if you do, until the end of the next turn, its effects are negated, as well as the activated effects and effects on the field of monsters with the same original name.

Spell Quick

Target 1 Spell/Trap on the field; destroy that target.

EARTH 4

If your opponent controls a monster and you control no monsters, you can Special Summon this card (from your hand). If this card attacks a Defense Position monster, inflict piercing battle damage to your opponent. When this card inflicts battle damage to your opponent: You can add 1 "Heroic" card from your Deck to your hand.

EARTH 4

If you control 2 or more Warrior monsters: You can Special Summon this card from your hand. If this card is Normal or Special Summoned: You can add 1 "Heroic" Spell/Trap from your Deck to your hand. If this card is in your GY and your LP are 500 or less: You can Special Summon this card, but negate its effects. You can only use each effect of "Heroic Challenger - Morning Star" once per turn.

LIGHT 10

You can Special Summon this card (from your hand) to your opponent's field in Attack Position, by Tributing 1 monster they control. If your opponent controls a "Kaiju" monster, you can Special Summon this card (from your hand) in Attack Position. You can only control 1 "Kaiju" monster. When a card or effect is activated that targets exactly 1 card (and no other cards) (Quick Effect): You can remove 3 Kaiju Counters from anywhere on the field; negate that effect, and if you do, you can destroy 1 card on the field.

Spell Normal

Banish 10 cards from the top of your Deck, face-down; draw 2 cards. You can only activate 1 "Pot of Desires" per turn.

WATER

2 Level 4 monsters While this card has a material attached that was originally WATER, all WATER monsters you control gain 500 ATK. Once per turn (Quick Effect): You can detach 1 material from this card; your opponent cannot activate any card effects in their GY this turn.

DARK

2 non-Link Monsters During your opponent's Main Phase, you can (Quick Effect): Immediately after this effect resolves, Link Summon 1 Link Monster using materials you control, including this card. You can only use this effect of "I:P Masquerena" once per turn. A Link Monster that used this card as material cannot be destroyed by your opponent's card effects.

Spell Normal

Destroy as many monsters on the field as possible, then Special Summon in Attack Position, 2 "Kaiju" monsters with different names from your Deck (1 on each side), but they cannot change their battle positions, and must attack, if able. During your Main Phase, except the turn this card was sent to the GY: You can banish this card from your GY; add 1 "Kaiju" monster from your Deck to your hand. You can only activate 1 "Interrupted Kaiju Slumber" per turn.

LIGHT

2 Level 12 monsters Once per turn, if an Xyz Monster battled this turn, you can also Xyz Summon "Divine Arsenal AA-ZEUS - Sky Thunder" by using 1 Xyz Monster you control as material. (Transfer its materials to this card.) (Quick Effect): You can detach 2 materials from this card; send all other cards from the field to the GY. Once per turn, if another card(s) you control is destroyed by battle or an opponent's card effect: You can attach 1 card from your hand, Deck, or Extra Deck to this card as material.

EARTH 1

If you control a "Heroic" monster, except a Level 1 monster: You can Special Summon this card from your hand. If this card is Normal or Special Summoned: You can target 1 other Warrior monster you control with a Level; the Level of that monster or this card becomes the Level of the other, also you cannot declare an attack for the rest of this turn, except with Xyz Monsters. You can only use each effect of "Heroic Challenger - Knuckle Sword" once per turn.

Spell Normal

Add 1 Level 4 or lower Warrior monster from your Deck to your hand.

FIRE 8

You can Special Summon this card (from your hand) to your opponent's field in Attack Position, by Tributing 1 monster they control. If your opponent controls a "Kaiju" monster, you can Special Summon this card (from your hand) in Attack Position. You can only control 1 "Kaiju" monster. Once per turn: You can remove 3 Kaiju Counters from anywhere on the field; destroy all monsters your opponent controls. This card cannot attack the turn this effect is activated.

Spell Normal

Destroy all Spell and Trap Cards your opponent controls.

FIRE

2 monsters with different names If this card is Link Summoned: You can discard 1 card, then target 1 Spell/Trap your opponent controls; destroy it, then, if this card was co-linked when this effect was activated, you can draw 1 card. You can only use this effect of "Knightmare Phoenix" once per turn. Co-linked monsters you control cannot be destroyed by battle.

EARTH 1

When this card is Special Summoned by the effect of a "Heroic Challenger" monster: You can add 1 "Heroic Challenger" monster from your Deck to your hand. You can only use the effect of "Heroic Challenger - Clasp Sword" once per turn.

LIGHT 9

You can Special Summon this card (from your hand) to your opponent's side of the field in Attack Position, by Tributing 1 monster they control. If your opponent controls a "Kaiju" monster, you can Special Summon this card (from your hand) in Attack Position. You can only control 1 "Kaiju" monster. Once per turn: You can remove 3 Kaiju Counters from anywhere on the field; your opponent's cards and effects cannot be activated for the rest of this turn, also this card can make up to 3 attacks on monsters during each Battle Phase this turn.

EARTH 4

An Xyz Monster that was Summoned using this card as Xyz Material gains this effect. ● When it is Xyz Summoned: It gains 1000 ATK.

Spell Normal

Target 1 face-up "Heroic" monster you control; this turn, double its ATK, but it cannot attack your opponent directly. You can only activate 1 "Heroic Chance" per turn.

LIGHT 11

During the Main Phase, if your opponent Normal or Special Summoned 5 or more monsters this turn (Quick Effect): You can Tribute as many face-up monsters on the field as possible, and if you do, Special Summon this card from your hand, then Special Summon 1 "Primal Being Token" (Rock/LIGHT/Level 11/ATK ?/DEF ?) to your opponent's field. (This Token's ATK/DEF become the combined original ATK/DEF of the Tributed monsters.) You can only use this effect of "Nibiru, the Primal Being" once per turn.

DARK 4

Cannot be Normal Summoned/Set. When you Normal Summon a Warrior monster: You can Special Summon this card from your hand. Cannot be used as Synchro Material.