Card Rulings:Guardian Kay'est


 * "Guardian Kay'est" is not affected by Spell Cards, just like "The Legendary Fisherman".


 * Your opponent cannot select "Guardian Kay'est" as the target of an attack.


 * If "Guardian Kay'est" is your only monster on the field, your opponent can attack your Life Points directly.


 * As long as "Guardian Kay'est" cannot be selected as the target of an attack, it cannot be targeted by the effect of "Staunch Defender", either.


 * If "Guardian Kay'est" and another monster are targeted for "Different Dimension Gate", only the other monster is removed from play and returns when "Different Dimension Gate" is destroyed.


 * If "Guardian Kay'est" and another monster are selected for "Creature Swap"'s effect, "Creature Swap"'s effect is negated because switching is impossible.

Mentions in Other Rulings

 * [Re: Adhesive Explosive] If this face-down card is attacked by "Horus the Black Flame Dragon LV6" or "Guardian Kay'est", it will still be equipped to the attacker, but it will not destroy the equipped monster during the Standby Phase.


 * [Re: Ancient Lamp] You can target a "Command Knight", "Guardian Kay'est" or "The Legendary Fisherman" with "Umi" on the field with "Ancient Lamp's" effect. You can target the opponent's "Soul-Absorbing Bone Tower" even if they control another face-up Zombie-Type monster.


 * [Re: Different Dimension Gate] When you select "Guardian Kay'est" or "The Legendary Fisherman" as a target of "Different Dimension" gate, only the other monster is removed and returns to the field when "Different Dimension Gate" is destroyed.


 * [Re: Staunch Defender] You cannot select "Guardian Kay'est" or "The Legendary Fisherman" for "Staunch Defender" if they cannot be attacked.


 * [Re: The Agent of Force - Mars] "The Agent of Force - Mars" is unaffected by Spell Cards just like "Guardian Kay'est" and "The Legendary Fisherman".

Guardian Rulings

 * "Guardian Baou", "Guardian Ceal", "Guardian Elma", "Guardian Grarl", "Guardian Kay'est", and "Guardian Tryce" all share some basic rules. Using "Guardian Elma" as an example:
 * You can Set "Guardian Elma" face-down without "Butterfly Dagger - Elma", but you cannot Special Summon her face-down with "The Shallow Grave", etc., unless you have "Butterfly Dagger - Elma" on your side of the field.
 * If your Set "Guardian Elma" is flipped face-up with "Swords of Revealing Light", or by an attack, without "Butterfly Dagger - Elma" on your side of the field, she remains on the field because she was not Summoned.
 * "Guardian Elma" is a normally Summoned monster, not a Special Summon-only monster. So if Normal Summoned she counts as your 1 Normal Summon for the turn.
 * You cannot use "Monster Reborn" on "Guardian Elma" if you do not have "Butterfly Dagger - Elma" on your side of the field.
 * If you activate "Monster Reborn" and target "Guardian Elma" while you have "Butterfly Dagger - Elma" on the field, and your opponent chains "Mystical Space Typhoon" to destroy "Butterfly Dagger - Elma", so that it is no longer on the field when "Monster Reborn" resolves, you cannot Special Summon "Guardian Elma" and "Monster Reborn's" effect disappears.
 * You can Normal Summon, Flip Summon, or Special Summon "Guardian Elma" even if your "Butterfly Dagger - Elma" has its effect negated by "Imperial Order".
 * If "Cyber Jar" resolves and you pick up "Guardian Elma" without "Butterfly Dagger - Elma" on your side of the field, "Guardian Elma" is added to your hand.