Indifferent Mage

When Indifferent Mage enters the battlefield, you may cast an instant or sorcery from your hand with converted mana cost 3 or less without paying its mana cost.
Indifferent Mage has +1/+1 for each instant and sorcery card in your graveyard.
Despite their best efforts, he wasn't willing to give his knowledge on his magic easily to the Guilds.