Slifer the Sky Dragon [KICO-EN063] Secret Pharaoh's Rare Forbidden Legacy you can halve this card's

you can halve this card's ATK (permanently)

Set: Astral Pack 3 Card type: Effect Monster Rarity: Ultimate Rare Attack: 1400 Defense: 0 When this card inflicts battle damage to your opponent: You can Special Summon 1 Level 4 or lower "Atlantean" Sea Serpent-Type monster from your Deck

then sending the top card of your Deck to the Graveyard

Blue-Eyes White Dragon cannot attack during the turn you activate this card

Slifer the Sky Dragon [KICO-EN063] Secret Pharaoh's Rare Forbidden Legacy you can halve this card'sSet: King's Court Card type: Effect Monster Rarity: Secret Pharaoh's Rare Attack: ? Defense: ? Requires 3 Tributes to Normal Summon (cannot be Normal Set). This card's Normal Summon cannot be negated. When Normal Summoned, cards and effects cannot be activated. Once per turn, during the End Phase, if this card was Special Summoned: Send it to the GY. Gains 1000 ATK DEF for each card in your hand. If a monster(s) is Normal or Special Summoned to your