Target 1 "Melffy" monster in your field or GY; return it to the hand, then you can Fusion Summon 1 Beast Fusion Monster from your Extra Deck, using monsters from your hand or field. If you control a "Melffy" Xyz Monster: You can banish this card from your GY; "Melffy" monsters you control that were Special Summoned from the Extra Deck are unaffected by your opponent's activated effects this turn. You can only use each effect of "Exciting Melffy Time" once per turn.
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.
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.
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.
Add up to 4 "Melffy" monsters with different names from your Deck to your hand, then it becomes the End Phase of this turn. You can banish this card from your GY, then target 2 "Melffy" cards in your GY, except "Melffy Statues Game"; add 1 of them to your hand, and if you do, place the other on the bottom of the Deck. You can only use this effect of "Melffy Statues Game" once per turn. You cannot Special Summon the turn you activate this card, except "Melffy" monsters.
Target 1 "Melffy" monster in your GY; Special Summon it. You can only activate 1 "Melffy Tag" per turn.