Mega-Tin 2020 - Tin of Lost Memories

You can detach 1 material from an Xyz Monster you control; Special Summon this card from your hand. If this card is Normal or Special Summoned: You can add 1 Time Thief card from your Deck to your hand, except Time Thief Winder. You can only use each effect of Time Thief Winder once per turn.

(Quick Effect): You can Tribute this card, then target 1 Time Thief Xyz Monster you control; attach 1 card from your opponent's GY to that monster as material. If this card is in the GY: You can detach 1 material from an Xyz Monster you control; Special Summon this card, but banish it when it leaves the field. You can only use each effect of Time Thief Bezel Ship once per turn.

If you control no other monsters: You can Tribute this card; Special Summon 2 Time Thief monsters with different names from your Deck in Defense Position, except Time Thief Regulator. When an Xyz Monster you control is destroyed by battle, while this card is in your GY: You can Special Summon this card, but banish it when it leaves the field. You can only use each effect of Time Thief Regulator once per turn.

2 Level 4 monsters
Once per turn, during the Standby Phase: You can attach the top card of your opponent's Deck to this card as material. (Quick Effect): You can detach up to 3 different types of materials from this card, then apply the following effect(s) depending on what was detached.
* Monster: Banish this card until the End Phase. * Spell: Draw 1 card.
* Trap: Place 1 face-up card your opponent controls on the top of the Deck.
You can only use this effect of Time Thief Redoer once per turn.

During the turn they are Special Summoned, Xyz Monsters you control cannot be destroyed by your opponent's card effects, also your opponent cannot target them with card effects. You can target 1 face-up Xyz Monster you control; it gains 300 ATK for each material currently attached to it, until the end of this turn, and if it does, and also has a material that is owned by your opponent, it can attack directly this turn (even if this card leaves the field). You can only use this effect of Time Thief Hack once per turn.

Target 1 Time Thief Xyz Monster you control; attach 1 Time Thief card from your hand or Deck to it as material. You can banish this card from your GY, then target 1 Time Thief Xyz Monster you control; attach 1 card from your opponent's GY to it as material. You can only use 1 Time Thief Flyback effect per turn, and only once that turn.

If this card is Special Summoned: You can Special Summon 1 Valkyrie monster from your Deck, except Valkyrie Sechste. During your Main Phase: You can send the top 2 cards of your opponent's Deck to the GY. You can only use each effect of Valkyrie Sechste once per turn.

During your Main Phase: You can excavate the top cards of your Deck equal to the number of other Valkyrie monsters you control, and if you do, add 1 excavated Normal Spell/Trap to your hand, also send the remaining cards to the GY. Otherwise, shuffle all excavated cards into the Deck. When this card is destroyed by battle and sent to the GY: You can Special Summon 1 Valkyrie monster from your Deck. You can only use each effect of Valkyrie Vierte once per turn.

Pay LP in multiples of 1000, then target 1 Valkyrie monster in your GY with a different name for every 1000 LP paid; Special Summon them, then your opponent can Special Summon monsters with 2000 or less ATK from their GY, up to the number of monsters you Special Summoned by this effect. You can only activate 1 Final Light per turn.

Target cards in your opponent's GY, up to the number of Valkyrie monsters you control; banish them. If this Set card in its owner's control has left the field because of an opponent's effect, and is now in the GY or banished: You can draw cards equal to the number of Valkyrie monsters you control +1.

FLIP: You can add 1 Subterror card from your Deck to your hand, except Subterror Guru. You can target 1 other face-up monster on the field; change that monster, also this card, to face-down Defense Position. This is a Quick Effect if you control another Subterror card. You can only use each effect of Subterror Guru once per turn.

If you control no monsters, or all monsters you control are Trickstar monsters: You can Special Summon this card from your hand. During the Damage Step, when your Trickstar monster battles an opponent's monster (Quick Effect): You can send this card from your hand to the GY; that monster you control gains ATK equal to its original ATK until the end of this turn. You can only use 1 Trickstar Corobane effect per turn, and only once that turn.