Card Rulings:Koa'ki Meiru Wall

"Koa'ki Meiru Wall":

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OCG Rulings

• Tributing this card is an activation cost.

• The effect does not target.

• You can activate the effect during the Damage Step.

• You cannot Chain this card's effect to the activation of the effect of a Spell Card.

Koa'ki Meiru Monster Rulings

TCG Rulings

• The first sentence of this card is a maintenance cost, not an effect. It does not start a Chain.

Mentions in Other Rulings

• Iron Core of Koa'ki Meiru: While “Macro Cosmos” is active, you cannot send “Iron Core of Koa’ki Meiru” to the Graveyard to pay the cost of keeping your “Koa’ki Meiru” monster on the field. So you must either pay the reveal cost, or destroy the monster.

OCG Rulings

• The text "During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard [or else]." of "Koa'ki Meiru" monsters is a Maintenance Cost.

• While your hand is revealed by the effect of "Respect Play"/"Ceremonial Bell"/etc, you cannot perform "reveal 1 Normal Trap Card from your hand." as a Maintenance Cost for "Koa'ki Meiru Powerhand". You must either perform either "send 1 "Iron Core of Koa'ki Meiru" to the Graveyard" or "destroy this card".

• While "Macro Cosmos" is activate, you cannot perform "send 1 "Iron Core of Koa'ki Meiru" to the Graveyard" as a Maintenance Cost for "Koa'ki Meiru Doom". You must either perform either "reveal 1 Fiend-Type monster from your hand." or "destroy this card".

• The text "During each of your End Phase, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard." of "Koa'ki Meiru Valafar" is a Maintenance Cost. It cannot be negated by the effect of "Skill Drain", so you must still pay the Maintenance Cost during your Standby Phases [sic].