Ennor, Regent of Minds

The first time on your turn you cast a
multicolored spell, each player exiles the top card
of their library. Each player who does may pay an amount of life equal to exiled card's mana cost to
put it into their hand.
The first time on your turn you cast a colorless
spell, each player exiles a card from their hand.
Each player who does may gain an amount of life
equal to exiled card's mana cost.