Nostalgia Pool Quarter Century Secret Rare

Cannot be Special Summoned. During your Main Phase 1, if this card was Normal Summoned this turn: You can Tribute this card; draw 2 cards, then it becomes the End Phase. You cannot Special Summon during the turn you activate this effect.

Target 1 Set Spell/Trap your opponent controls; destroy that target. Your opponent cannot activate the targeted card in response to this card's activation.

If this card is Normal Summoned or flipped face-up: Add 1 Spellbook Spell from your Deck to your hand.

You can reveal 3 Spellbook Spells in your hand; Special Summon this card from your hand. Once per turn: You can banish 1 Spellbook Spell from your hand or GY, then target 1 card on the field; destroy that target.

If this card in your possession is destroyed by an opponent's card and sent to your GY: Shuffle this card into the Deck. When this card is Normal or Flip Summoned: You can add 1 Madolche monster from your Deck to your hand.

Gains 800 ATK/DEF while you have no monsters in your GY. If this card in your possession is destroyed by an opponent's card and sent to your GY: Shuffle this card into the Deck. After damage calculation, if this card battles an opponent's monster: You can target 1 card your opponent controls; destroy that target.

Once per turn: You can change this card to face-down Defense Position. When this card is flipped face-up: You can add 1 Geargia monster from your Deck to your hand, except Geargiarmor.

2 Level 4 Machine monsters
Once per turn: You can detach 1 material from this card; add 1 Level 4 or lower Machine monster from your Deck or GY to your hand. When this face-up card leaves the field: You can target 1 Level 3 or lower Geargia monster in your GY; Special Summon that target.

Add 1 Spellbook card from your Deck to your hand, except Spellbook of Secrets. You can only activate 1 Spellbook of Secrets per turn.

When your opponent Special Summons a monster(s) with 2000 or more ATK: Negate the effects of 1 of those monsters with 2000 or more ATK, and if you do, destroy it.

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

(This card is also always treated as Legendary Dragon Timaeus.)
Target 1 Dark Magician monster you control; Fusion Summon 1 Fusion Monster from your Extra Deck that mentions that monster on the field as material, using it as the Fusion Material. You can only activate 1 The Eye of Timaeus per turn.