Koa'ki Meiru War Arms [RGBT-EN081] Super Rare BW31 Set: Black & White: Dragons

Set: Black & White: Dragons Exalted Type: Psychic Rarity: Rare Retreat cost: 1

Set: Black & White: Boundaries Crossed Type: Lightning Rarity: Uncommon Retreat cost: 0

the ATK/DEF of all face-up monsters your opponent controls become half their current ATK/DEF (even if this card leaves the field)

Set: Sun & Moon: Guardians Rising Type: Water Rarity: Ultra Rare Retreat cost: Colorless

this card can be used as the entire requirement

Koa'ki Meiru War Arms [RGBT-EN081] Super Rare BW31 Set: Black & White: DragonsSet: Raging Battle Card type: Effect Monster Rarity: Super Rare Attack: 1400 Defense: 1200 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 reveal 1 Warrior Type monster in your hand. Once per turn, you can select 1 Level 3 or lower Warrior Type monster in your Graveyard and equip it to this card. This card gains ATK equal to half of those equipped cards' combined ATK.