| Crystal Keeper | |
| Type: | Pendulum/Effect Monster |
| Sub-Type: | Warrior |
| Attribute: | FIRE |
| Level: | 4 |
| ATK: | 1500 |
| DEF: | 1800 |
| Text: | If a "Crystal Beast" monster you control battles an opponent's monster, during damage calculation (Quick Effect): You can Tribute this card from your hand or face-up field; your battling monster's ATK/DEF become double its original ATK/DEF during that damage calculation only, but it is destroyed at the end of this Damage Step. |
| Pendulum Scale: | 2 |
| Pendulum Effect: | Each turn, the first an "Ultimate Crystal" monster(s) and/or "Crystal Beast" card(s) you control that would be destroyed by a card effect that turn, it is not destroyed. |
| Password: | 14469229 |
| Printings |
Structure Deck: Legend of the Crystal Beasts (SDCB-EN010) -
2022-09-29 2019 Gold Sarcophagus Mega Pack (MP19-EN066) - 2019-08-29 Flames of Destruction (FLOD-EN093) - 2018-05-04 |