Iron Core Immediate Disposal

edisonformat.net ● You can't activate this card unless there is an "Iron Core of Koa’ki Meiru" in your Deck. edisonformat.com You cannot activate “Iron Core Immediate Disposal” unless there is an “Iron Core of Koa’ki Meiru” in your Deck. IRON CORE OF KOA’KI MEIRU Both effects of “Iron Core of Koa’ki Meiru” start a chain. Sending a “Koa’ki Meiru” monster to the Graveyard is a cost to activate the second effect. 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.