Chakram Retriever (Prerelease) [Battlebond Promos] Unhinged the Mirari pulsed like a

the Mirari pulsed like a dead sun—and its darkness radiated across Otaria

Whenever enchanted player casts a spell

Set: Beta Edition Type: Sorcery Rarity: Rare Cost: {X}{B} Target player discards X cards at random

The rest you can find

Chakram Retriever (Prerelease) [Battlebond Promos] Unhinged the Mirari pulsed like aSet: Battlebond Promos Type: Creature Elemental Dog Rarity: Uncommon Cost: {4}{U} Partner with Chakram Slinger (When this creature enters the battlefield, target player may put Chakram Slinger into their hand from their library, then shuffle.) Whenever you cast a spell during your turn, untap target creature.