Mytros, Last Lord of Amenda

Knights you control have shroud while you
control a Mage.
Tap X Mages you control: Return a non-creature
spell with total mana cost X from your graveyard
to your hand.
{w/u}{w/u}: Tap target creature an opponent controls.
Draw a card, then put a card from your hand on
the top or on the bottom of your deck.
{u/b}{w}: Target player discards a card. You gain life
equal to the discarded card's total mana cost.