Edison format ruling
Koa'ki Meiru Maximus

Card text as printed in this era© Can't be Normal Summoned/Set.
© Must first be Special Summoned (from your hand) by banishing 1 "Iron Core of Koa'ki Meiru" from your hand.
Ⓜ During your End Phase, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru",
or 1 "Koa'ki Meiru" monster, from your hand to the GY.
① Once per turn: You can target 1 card your opponent controls; destroy that target.
Rulings
- The Ⓜ in this card's text is a maintenance cost. It is not an effect, does not activate, and can't be negated.
- As long as this card was initially Special Summoned by its own procedure (and the summon wasn't negated), you can Summon it from the GY with card effects.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.