Chakram Retriever (Prerelease) [Battlebond Promos] Unhinged a spell that would cost

a spell that would cost {1}{B} to cast costs {2}{B} to cast instead

Whenever enchanted player casts a spell

The rest you can find

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

Set: Urza's Saga Type: Enchantment Rarity: Rare Cost: {2}{G}{G} Sacrifice a creature: Draw cards equal to the sacrificed creature's power

Chakram Retriever (Prerelease) [Battlebond Promos] Unhinged a spell that would costSet: 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.