Doomcaliber Knight [TU01-EN001] Ultra Rare BT4-038 you can add 1 "Polymerization"

you can add 1 "Polymerization" from your Deck or Graveyard to your hand

if you gain LP: This card gains 1000 ATK and DEF until the end of your opponent's turn

Xyz Materials attached to this card also become Xyz Materials on the Summoned monster

Set: Neo Revelation 1st Edition Type: Psychic Rarity: Common Retreat cost: Colorless

Doomcaliber Knight [TU01-EN001] Ultra Rare BT4-038 you can add 1 "Polymerization"Set: Turbo Pack Booster One Pack Card type: Effect Monster Rarity: Ultra Rare Attack: 1900 Defense: 1800 This card cannot be Special Summoned. When an Effect Monster's effect is activated, you must Tribute this card. Negate that effect's activation and destroy the monster.