Lura, Lore Seeker

First Strike, Vigilance
Whenever Lura, Lore Seeker, enters the
battlefield or attacks; reveal the top card of your library. If it's red Lura, Lore Seeker gains haste.
If it's blue, draw a card. If it's white; attacking creatures gain +X/+X where X is half the
revealed card's converted mana cost rounded up.