Shadows in Valhalla

You can discard 2 other WATER monsters to the Graveyard; Special Summon this card from your hand. When you do: You can add 1 Abyss- Spell/Trap Card from your Deck to your hand. You can Tribute 1 other face-up Attack Position WATER monster; this card can make a second attack during each Battle Phase this turn.

You can discard 3 other WATER monsters to the Graveyard; Special Summon this card from your hand. When you do: You can target 1 Abyss- Spell/Trap Card in your Graveyard; add that target to your hand. You can Tribute 1 other face-up Attack Position Mermail monster; send 1 random card from your opponent's hand to the Graveyard. You can only use this effect of Mermail Abyssleed once per turn.

You can discard 1 other WATER monster to the GY; Special Summon this card from your hand. If Summoned this way: Add 1 Level 4 or lower Mermail monster from your Deck to your hand. You can only use this effect of Mermail Abyssteus once per turn.

During either player's turn: You can send this card from your hand to the Graveyard, then target 1 Fusion Monster you control; it gains 1000 ATK and DEF until the end of this turn. If this card is Normal Summoned or flipped face-up: You can add 1 Invocation from your Deck to your hand.

Aleister the Invoker + 1 LIGHT monster
Once per turn, during either player's turn, when a Spell/Trap Card, or monster effect, is activated: You can send the same type of card (Monster, Spell, or Trap) from your hand to the Graveyard; negate the activation, and if you do, banish that card.

When this card is activated: You can add 1 Aleister the Invoker from your Deck to your hand. The activation of your cards and effects that include an effect that Fusion Summons a Fusion Monster cannot be negated, also your opponent's cards and effects cannot activate when a monster is Fusion Summoned this way. You can only activate 1 Magical Meltdown per turn.

Fusion Summon 1 Fusion Monster from your Extra Deck, using monsters from your hand as Fusion Material. If Summoning an Invoked Fusion Monster this way, you can also banish monsters from your field and/or either player's GY as Fusion Material. If this card is in your GY: You can target 1 of your banished Aleister the Invoker; shuffle this card into the Deck, and if you do, add that card to your hand. You can only use this effect of Invocation once per turn.

Target any number of your banished Invoked monsters with different names; Special Summon them in Defense Position.

When an effect is activated, you can select 1 face-up Mist Valley card you control. Return that Mist Valley card to its owner's hand, negate the effect's activation, and destroy the card whose effect was activated.

If you control no monsters: You can Special Summon this card from your hand, then you can Special Summon 1 Windwitch monster from your Deck, but it cannot be Tributed. You cannot Special Summon monsters from the Extra Deck the turn you activate this effect, except Level 5 or higher WIND monsters. If this card is Normal or Special Summoned: You can inflict 500 damage to your opponent. You can only use each effect of Windwitch - Ice Bell once per turn.

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.

1 Gem-Knight monster + 1 LIGHT monster
Must first be Fusion Summoned with the above Fusion Materials. During your Main Phase, you can Normal Summon/Set 1 monster in addition to your Normal Summon/Set. (You can only gain this effect once per turn.)