Ashaya, Soul of the Wild [Secret Lair Drop Series] Sliver Mutant you may exile a black

you may exile a black card from your hand rather than pay this spell's mana cost

Set: Strixhaven: Mystical Archive Type: Instant Rarity: Mythic Cost: {1}{B} Exile the top card of your library

Set: Dominaria United Commander Type: Legendary Land Rarity: Rare {T}: Add {B}

Set: Core Set 2020 Prerelease Promos Type: Creature — Human Rogue Rarity: Rare Cost: {5}{U}{U} When Agent of Treachery enters the battlefield

but there's little we can do about the smell

Ashaya, Soul of the Wild [Secret Lair Drop Series] Sliver Mutant you may exile a blackSet: Secret Lair Drop Series Type: Legendary Creature Elemental Rarity: Mythic Cost: {3}{G}{G} Ashaya's power and toughness are each equal to the number of lands you control. Nontoken creatures you control are Forest lands in addition to their other types. (They're still affected by summoning sickness.)