Jeff, Knowledgeable Wizard

At the beginning of your first main phase if, Jeff, Knowledgeable Wizard is in your command zone, you gain {w}{u}{b}. Only use this mana to cast other wizard spells.

You may pay for any {w}{u}{b} cost by using 2 life for each color instead.

While Jeff, Knowledgeable Wizard is on the battlefield, wizards you control gain Indestructible and Hexproof.