Koa'ki Meiru Hydro Barrier
Aqua / Effect
WATER / 
3You can return 1 "Iron Core of Koa'ki Meiru" from your hand to the top of the Deck. If you do, the effect(s) of all face-up Effect Monsters are negated until the Standby Phase of your next turn, except "Koa'ki Meiru" monsters.
1000/1900
CARD ID: 31692182
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| TCG Set | Symbol | Rarity | Low | Avg | Trend | |
|---|---|---|---|---|---|---|
| Ancient Prophecy | ANPR-EN022 | Common | -,--€ | -,--€ | -,--€ |
This card is among the few Koa'ki Meiru cards that don't have the maintenance cost that's specific to the Archetype. The others are Koa'ki Meiru Boulder, Koa'ki Meiru Tornado and Koa'ki Meiru Prototype.
TCG Rulings
Returning “Iron Core of Koa’ki Meiru” from your hand to the top of the Deck is a cost.: Ancient Prophecy -- Card Rulings (version 1.0)
If “Koa’ki Meiru Hydro Barrier{{SpanEffect Monsters are still negated.
If your opponent Summons a monster while the effect of “Koa’ki Meiru Hydro Barrier” is being applied, that monster’s effect will be negated.
OCG Rulings
Returning an "Iron Core of Koa'ki Meiru" from your hand to the top of your Deck is a cost to activate the effect of "Koa'ki Meiru Hydro Barrier".: Effect Monster > Koa'ki Meiru Hydro Barrier
The effect of "Koa'ki Meiru Hydro Barrier" will also negate the effects of monsters Summoned after the effect of "Koa'ki Meiru Hydro Barrier" resolves.: After applying the effect of "Koa'ki Meiru Hydro Barrier", when a monster is Summoned, will its effects be negated?