Koala Deck Breakdown

EARTH 8

Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) while the total ATK of all monsters your opponent controls is more than that of all monsters you control. You can target any number of Beast, Beast-Warrior, and/or Winged Beast monsters you control; return them to the hand, then, return face-up monsters your opponent controls to the hand, equal to the number of cards you returned to the hand, also for the rest of this turn, "Alpha, the Master of Beasts" you control cannot attack directly. You can only use this effect of "Alpha, the Master of Beasts" once per turn.

EARTH 2

If this card is Special Summoned by the effect of a Beast-Type monster: You can target 1 card on the field; destroy that target.

EARTH 2

If your opponent Normal or Special Summons a monster(s) (except during the Damage Step), or if an opponent's monster targets this card for an attack: You can return this card to the hand, then you can add 1 Beast monster from your Deck to your hand, except "Melffy Catty". During your End Phase: You can Special Summon this card from your hand. You can only use each effect of "Melffy Catty" once per turn.

EARTH 2

If your opponent Normal or Special Summons a monster(s) (except during the Damage Step), or if an opponent's monster targets this card for an attack: You can return this card to the hand, then you can Special Summon 1 Beast monster from your hand, except "Melffy Fenny". During your End Phase: You can Special Summon this card from your hand. You can only use each effect of "Melffy Fenny" once per turn.

EARTH 2

If your opponent Normal or Special Summons a monster(s) (except during the Damage Step), or if an opponent's monster targets this card for an attack: You can return this card to the hand, then you can add 1 Level 2 or lower Beast monster from your GY to your hand, except "Melffy Pony". During your End Phase: You can Special Summon this card from your hand. You can only use each effect of "Melffy Pony" once per turn.

EARTH 2

If your opponent Normal or Special Summons a monster(s) (except during the Damage Step), or if an opponent's monster targets this card for an attack: You can return this card to the hand, then you can Special Summon 1 Level 2 or lower Beast monster from your Deck, except "Melffy Puppy". During your End Phase: You can Special Summon this card from your hand. You can only use each effect of "Melffy Puppy" once per turn.

EARTH 2

If your opponent Normal or Special Summons a monster(s) (except during the Damage Step), or if an opponent's monster targets this card for an attack: You can return this card to the hand, then you can Special Summon 2 "Melffy" monsters from your Deck with different names from each other, except "Melffy Wally". During your End Phase: You can Special Summon this card from your hand. You can only use each effect of "Melffy Wally" once per turn.

EARTH 4

You can send this card to the GY; Special Summon 2 Level 3 or lower Beast monsters from your Deck, but their effects are negated, also they are destroyed during the End Phase. You can only use this effect of "Rescue Cat" once per turn.

EARTH 2

Once per turn: You can target 1 monster your opponent controls; change its ATK to 0 until the end of this turn. You must control a Beast-Type monster (other than this card) to activate and to resolve this effect.

WIND 2

You can Tribute this card, then target 1 Level 2 monster in your GY, except "Silvervine Senri"; Special Summon it, then you can Special Summon 1 Level 2 monster from your hand with a different Attribute than the monster Special Summoned by this effect. You can only use this effect of "Silvervine Senri" once per turn.

LIGHT 1

If this card on the field is destroyed and sent to the GY: For the rest of this turn, you take no battle damage.

DARK

3+ Effect Monsters Cannot be destroyed by battle or card effects, also neither player can target this card with monster effects. This card can attack all monsters your opponent controls, once each. (Quick Effect): You can target 1 Effect Monster on the field and 1 "Rokket" monster in your GY; negate the effects of that monster on the field, and if you do, Special Summon that monster from your GY. Your opponent cannot activate cards or effects in response to this effect's activation. You can only use this effect of "Borrelend Dragon" once per turn.

EARTH 2

''Rabby's up on that favorite stump again, looking all around the forest at all the fluffy friends! Do you like exploring, too? Good! Let's go find more Melffy friends with Rabby!''

EARTH 4

1 Tuner + 1+ non-Tuner monsters If this card is Special Summoned: You can target 1 face-up monster on the field; return it to the hand. If your opponent Normal or Special Summons a monster(s) (except during the Damage Step), or if an opponent's monster targets this card for an attack: You can return this card to the Extra Deck, then, you can Special Summon 1 "Melffy" Xyz Monster from your Extra Deck. You can only use each effect of "Merry Melffys" once per turn.

WATER 6

1 Tuner + 1+ non-Tuner monsters Once per turn: You can discard 1 card, then target 1 card your opponent controls; destroy it. If this Synchro Summoned card is sent from the field to the GY: You can draw 1 card. You can only use this effect of "Coral Dragon" once per turn.

LIGHT 3

When a monster on the field activates its effect, or when a Spell/Trap that is already face-up on the field activates its effect (Quick Effect): You can send this card from your hand or field to the GY; destroy that card on the field. You can only use this effect of "Ghost Ogre & Snow Rabbit" once per turn.

WATER 2

If a face-up Beast monster you control was returned to the hand this turn, except "Melffy Pinny" (Quick Effect): You can Special Summon this card from your hand, then immediately after this effect resolves, Synchro Summon 1 Synchro Monster using only this card you control and "Melffy" monsters in your hand. During your End Phase, if this card is in your GY: You can target 1 Beast Xyz Monster you control; attach this card to it as material. You can only use each effect of "Melffy Pinny" once per turn.

WATER

2 Level 2 monsters While this card has an Xyz Material attached that was originally WATER, it cannot be destroyed by battle. Once per turn, during either player's turn: You can detach 1 Xyz Material from this card, then target 1 Rank 4 or lower Xyz Monster you control; its ATK and DEF each become double its original ATK and DEF until the end of this 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.

DARK

2 Level 4 Spellcaster-Type monsters During your Main Phase 2, you can also Xyz Summon this card by using a Rank 3 or lower Xyz Monster you control as the Xyz Material. (Xyz Materials attached to that monster also become Xyz Materials on this card.) This card gains 200 ATK for each Xyz Material attached to it. If this card attacks a Defense Position monster, inflict piercing battle damage to your opponent. If this card attacked or was attacked, after damage calculation: Detach 1 Xyz Material from this card.

EARTH

2+ Level 2 Beast monsters You can detach 1 material from this card; your "Melffy" monsters can attack directly this turn. During your opponent's turn (Quick Effect): You can target 1 Beast Xyz Monster you control; return that monster to the Extra Deck, then you can Special Summon Level 2 or lower Beast monsters from your GY, up to the number of materials that monster had. You can only use this effect of "Joyous Melffys" once per turn.

EARTH

2+ Level 2 Beast monsters Once per turn (Quick Effect): You can attach 1 Beast monster from your hand or face-up field to this card as material. This card gains effects based on the number of materials attached to it. ● 3+: Cannot be destroyed by battle. ● 4+: You take no damage from battles involving this card. ● 5+: When an attack is declared involving this card and an Attack Position monster: You can inflict damage to your opponent equal to that Attack Position monster's ATK.

EARTH

2 Level 2 monsters You can detach 1 material from this card; add 1 "Melffy" card from your Deck to your hand. If another face-up "Melffy" monster you control returns to your hand (except during the Damage Step): You can target 1 face-up monster your opponent controls; it cannot attack, also its effects are negated while it is face-up on the field. You can only use each effect of "Melffy of the Forest" once per turn.

Spell Continuous

The first time each Beast monster you control would be destroyed by card effect each turn, it is not destroyed. You can target 3 Beast monsters in your GY with different names; shuffle them into the Deck, then draw 1 card. You can only use this effect of "Melffy Hide-and-Seek" once per turn.

Spell Continuous

You can reveal 1 Beast monster in your hand; add 1 "Melffy" monster with a different name from your Deck or GY to your hand and place that revealed monster on the bottom of the Deck. You can only use this effect of "Melffy Staring Contest" once per turn. At the start of your opponent's Battle Phase: You can reveal any number of "Melffy" monsters in your hand and keep them revealed during this Battle Phase only. Monsters your opponent controls lose ATK equal to the combined ATK and DEF of the monsters revealed by this effect.

Spell Quick

Target 1 "Melffy" monster in your GY; Special Summon it. You can only activate 1 "Melffy Tag" per turn.

Trap Normal

Detach any number of materials from Beast Xyz Monsters you control, then target up to that many cards your opponent controls; return them to the hand, also all Beast Xyz Monsters you control gain 500 ATK for each material detached to activate this card, until the end of this turn.

EARTH 8

Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) while the total ATK of all monsters your opponent controls is more than that of all monsters you control. You can target any number of Beast, Beast-Warrior, and/or Winged Beast monsters you control; return them to the hand, then, return face-up monsters your opponent controls to the hand, equal to the number of cards you returned to the hand, also for the rest of this turn, "Alpha, the Master of Beasts" you control cannot attack directly. You can only use this effect of "Alpha, the Master of Beasts" once per turn.

EARTH 4

You can send this card to the GY; Special Summon 2 Level 3 or lower Beast monsters from your Deck, but their effects are negated, also they are destroyed during the End Phase. You can only use this effect of "Rescue Cat" once per turn.

DARK

3+ Effect Monsters Cannot be destroyed by battle or card effects, also neither player can target this card with monster effects. This card can attack all monsters your opponent controls, once each. (Quick Effect): You can target 1 Effect Monster on the field and 1 "Rokket" monster in your GY; negate the effects of that monster on the field, and if you do, Special Summon that monster from your GY. Your opponent cannot activate cards or effects in response to this effect's activation. You can only use this effect of "Borrelend Dragon" once per turn.

LIGHT 3

When a monster on the field activates its effect, or when a Spell/Trap that is already face-up on the field activates its effect (Quick Effect): You can send this card from your hand or field to the GY; destroy that card on the field. You can only use this effect of "Ghost Ogre & Snow Rabbit" once 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

2+ Level 2 Beast monsters You can detach 1 material from this card; your "Melffy" monsters can attack directly this turn. During your opponent's turn (Quick Effect): You can target 1 Beast Xyz Monster you control; return that monster to the Extra Deck, then you can Special Summon Level 2 or lower Beast monsters from your GY, up to the number of materials that monster had. You can only use this effect of "Joyous Melffys" once per turn.

EARTH

2 Level 2 monsters You can detach 1 material from this card; add 1 "Melffy" card from your Deck to your hand. If another face-up "Melffy" monster you control returns to your hand (except during the Damage Step): You can target 1 face-up monster your opponent controls; it cannot attack, also its effects are negated while it is face-up on the field. You can only use each effect of "Melffy of the Forest" once per turn.