Mana Tithe (Japanese Foil Etched) [Strixhaven: School of Mages Mystical Archive]Set: Strixhaven: School of Mages Mystical Archive Type: Instant Rarity: Rare Cost: {W} Counter target spell unless its controller pays {1}.

that player adds one mana of any type that land produced

Set: Iconic Masters Type: Legendary Creature — Dragon Spirit Rarity: Rare Cost: {4}{B}{B} Flying

but measures of sanity among planeswalkers are hard to come by

Set: Kamigawa: Neon Dynasty Prerelease Promos Type: Legendary Creature — Fox Advisor Rarity: Rare Cost: {1}{W} Whenever an Aura enters the battlefield under your control

Set: Commander 2020 Tokens Rarity: Common Reverse Type: Token Creature — Elemental Flying

Each opponent loses life equal to its mana value

Set: Black & White: Plasma Blast Type: Metal Rarity: Ultra Rare Retreat cost: Colorless

Set: Tempest Type: Enchantment — Aura Rarity: Uncommon Cost: {W} Enchant creature

Set: EX: Crystal Guardians Type: Colorless Rarity: Ultra Rare Retreat cost: 0

Set: War of the Spark Prerelease Promos Type: Legendary Planeswalker — Vraska Rarity: Uncommon Cost: {2}{B/G}{B/G} Whenever a creature you control with deathtouch deals damage to a player or planeswalker

At the beginning of enchanted player's first upkeep each turn

Set: Duel Decks Anthology Type: Creature — Elemental Rarity: Common Cost: {4}{U} Flying