Mystical Tutor [From the Vault: Exiled] SM04 it produces colorless mana instead

it produces colorless mana instead of white mana

Set: Legendary Collection Type: Fire Rarity: Holo Rare Retreat cost: Colorless

Set: Lorwyn Type: Legendary Creature — Goblin Shaman Rarity: Rare Cost: {2}{B}{R} Fear (This creature can't be blocked except by artifact creatures and/or black creatures

Set: EX: Crystal Guardians Type: Lightning Rarity: Holo Rare Retreat cost: Colorless

When Treachery enters the battlefield

Mystical Tutor [From the Vault: Exiled] SM04 it produces colorless mana insteadSet: From the Vault: Exiled Type: Instant Rarity: Mythic Cost: {U} Search your library for an instant or sorcery card, reveal it, then shuffle and put that card on top. The student searches the world for meaning. The master finds worlds of meaning in the search.