Card Tips:Number 66: Master Key Beetle

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  • Use this card's effect with "Safe Zone" to prevent this card from being targeted by card effects or being destroyed.
    • Alternatively, a monster your opponent controls could be targeted with "Safe Zone". If this card would be destroyed, simply send the "Safe Zone" to the Graveyard instead to simultaneously destroy your opponent's monster
  • A near-invincible combination for this card involves Number Wall and Imperial Custom. Have this monster on the field, and activate Number Wall and Imperial Custom. Custom will protect Number Wall, which in turn will protect this monster. This monster can then use it's ability to protect Imperial Custom. So to break this combo, the opponent will need to negate the ability of this card and have a Trap-destroying card.
  • Summon this card pretty easily by Normal Summoning any Level 4 DARK monster, then Special Summoning "Kagetokage" via its effect.
  • If there are two of this card on your side of the field, use their effects on each other so both cannot be destroyed by card effects.
  • Using this card's effect on "Vanity's Emptiness" will prevent its self-destruction effect.
  • Use with "Imperial Custom" in a Trap Monster Deck. "Custom" makes Trap Monsters immune to destruction and this card protects "Custom"
    • Using "Tiki Curse" and "Tiki Soul" would allow to destroy your opponent's monsters, and protect your own Trap Monsters while doing so, making "Spirit Barrier" a nice choice, too.
  • Use this card's effect on monsters that would otherwise be the focus of your opponent's destruction effects and therefore not worth Summoning, like "Perfect Machine King", "Emes the Infinity", or other high-Level monsters.
  • This card works well in a "Gravekeeper's" Deck, as many of its members are Level 4 DARK monsters, while its effect can be used to prevent the destruction of "Necrovalley".
  • If this card's effect is used on "Number Wall", both cards can very well be immune to any type of destruction.
  • This card's effect can be used on "Stardust Spark Dragon", and use the effect of "Stardust Spark Dragon" on this card, then you will have 2 nearly indestructible monsters as long as they are face-up. Equip both with "Mist Body" to have a improvement on this combo.
  • The self-destruction effect of "Heart of Clear Water" can be circumvented by first Setting it, then activating the effect of this card, targeting the Set card. After that, the Spell can then be activated, equipping it to any monster of your choice.

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