| Set: | Legendary Collection Kaiba (2020 Date Reprint) |
| Card type: | Union/Effect Monster |
| Rarity: | Ultra Rare |
| Attack: | 1500 |
| Defense: | 1600 |
Once per turn, you can either: Target 1 "X-Head Cannon" or "Y-Dragon Head" you control; equip this card to that target, OR: Unequip this card and Special Summon it. A monster equipped with this card gains 600 ATK and DEF, also if the equipped monster would be destroyed by battle or card effect, destroy this card instead.
![Spellbook of Knowledge [CH02-EN033] Ultra Rare](<br />
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