Peacekeeper [Weatherlight] Booster Box you can discard 1 card

you can discard 1 card from your hand to negate the activation of a Spell Card and destroy it

" —Barrin

−X: Search your library for an artifact card with converted mana cost X or less and put it onto the battlefield

you can also Xyz Summon "Divine Arsenal AA-ZEUS - Sky Thunder" by using 1 Xyz Monster you control as material

Then that player shuffles their library

Peacekeeper [Weatherlight] Booster Box you can discard 1 cardSet: Weatherlight Type: Creature Human Rarity: Rare Cost: {2}{W} At the beginning of your upkeep, sacrifice Peacekeeper unless you pay {1}{W}. Creatures can't attack. "I have always imagined my mother as such a woman, strong and wise." Sisay, journal