Boseiju, Who Endures [Kamigawa: Neon Dynasty Prerelease Promos]Set: Kamigawa: Neon Dynasty Prerelease Promos Type: Legendary Land Rarity: Rare {T}: Add {G}. Channel {1}{G}, Discard Boseiju, Who Endures: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs {1} less to activate for each legendary creature you control.

Whenever an opponent sacrifices a nontoken permanent

Set: Alternate Art Promos Type: Darkness Rarity: Promo Retreat cost: Colorless

Set: EX: Legend Maker Type: Darkness Rarity: Holo Rare Retreat cost: Colorless

Set: Amonkhet Invocations Type: Enchantment — Aura Rarity: Mythic Cost: {1}{U}{U} Enchant creature with mana value 2 or less

Set: HeartGold & SoulSilver: Unleashed Type: Water Rarity: Holo Rare Retreat cost: Colorless

Set: World Championships 2004 Type: Psychic Rarity: Ultra Rare Retreat cost: Colorless

some wizards are finding that they have a little too much spell left at the end of their mana

Set: Sun & Moon: Unified Minds Type: Stadium Rarity: Secret Rare

where X is the amount of mana that player paid this way

Set: Legendary Collection Type: Psychic Rarity: Rare Retreat cost: Colorless

Karma deals damage to that player equal to the number of Swamps they control

the Wu kingdom controlled more than 7