Shadows in Valhalla

1 Shaddoll monster + 1 DARK monster
Must first be Fusion Summoned. Cannot be destroyed by an opponent's card effects. Each player can only Special Summon monster(s) once per turn while this card is face-up on the field. If this card is sent to the Graveyard: You can target 1 Shaddoll Spell/Trap Card in your Graveyard; add it to your hand.

1 Dragon-Type Tuner + 1 or more non-Tuner Winged Beast-Type monsters
When this card is Synchro Summoned: You can target 1 Level 3 or lower Dragon-Type Dragunity monster in your Graveyard; equip that target to this card. Once per turn: You can send 1 Equip Card equipped to this card to the Graveyard; double this card's ATK until the End Phase.

2 monsters with the same Type, except Tokens
You can only Link Summon Akashic Magician(s) once per turn. If this card is Link Summoned: Return all monsters this card points to to the hand. Once per turn: You can declare 1 card name; excavate cards from the top of your Deck, equal to the total Link Rating of the Link Monsters co-linked to this card, then if you excavated any copies of the declared card, add them to your hand, also send the remaining cards to the GY.

Return 1 Cyberdark Horn, Cyberdark Edge and Cyberdark Keel from your side of the field, hand, or Graveyard to your Deck. Special Summon 1 Cyberdark Dragon from your Extra Deck. (This Special Summon is treated as a Fusion Summon.)

Activate only if you control a Bamboo Sword Equip Spell Card. Draw 2 cards.

Send 1 face-up Continuous Trap Card you control to the Graveyard; draw 2 cards.

All Crystal Beast monsters on the field and in the Graveyard become DARK. If an Ultimate Crystal monster attacks, negate the effects of the attack target during that Battle Phase. During damage calculation, if a Crystal Beast monster you control battles and you would take damage: You can send 1 Crystal Beast monster from your Deck to the Graveyard; you take no Battle Damage from that battle.

Fusion Summon 1 Shaddoll Fusion Monster from your Extra Deck, using monsters from your hand or your side of the field as Fusion Materials. If your opponent controls a monster(s) that was Special Summoned from the Extra Deck, you can also use monsters in your Deck as Fusion Material. You can only activate 1 Shaddoll Fusion per turn.

When this card is activated: Add 1 Black Luster Soldier Ritual Monster or 1 Gaia The Fierce Knight monster from your Deck to your hand. Each time a Monster Card(s) is sent from the hand or field to the Graveyard, place 1 Spell Counter on this card for each of those cards (max. 6). Once per turn: You can remove 3 Spell Counters from this card; add 1 Ritual Spell Card from your Deck to your hand. You can only activate 1 Gateway to Chaos per turn.

Discard 1 card, then target up to 2 Spell/Trap Cards on the field; destroy them.

If you control no Ritual Monsters: Banish 1 Ritual Spell Card from your hand or Graveyard; this card's effect becomes that card's effect that Ritual Summons a monster when the card is activated.