Hannah, Adoring Mage

Partner with Rory, Warden of the Heart
Soaring Heart (If Rory, Warden of the Heart is on the battlefield, Hannah, Adoring Mage has flying, vigilance and lifelink)
{3}:Target opponent exiles the top card of their library face-down. So long as it remains exiled, you may cast that spell, and you may spend mana as if it were any colour to do so.