North Star [Legends] Sorcery Set: Amonkhet Invocations Type: Sorcery

Set: Amonkhet Invocations Type: Sorcery Rarity: Mythic Cost: {2}{B}{B} Destroy all creatures

Whenever Sphinx Ambassador deals combat damage to a player

and that player can't activate abilities that aren't mana abilities

They just know it's unnatural—and coming from Krosa

you may return that nonland permanent card to the battlefield instead

North Star [Legends] Sorcery Set: Amonkhet Invocations Type: SorcerySet: Legends Type: Artifact Rarity: Rare Cost: {4} {4}, {T}: For one spell this turn, you may spend mana as though it were mana of any type to pay that spell's mana cost. (Additional costs are still paid normally.)