Shallan Davar

Oathbound {u}{u}{b}
When Shallan enters the battlefield, exile three
cards from your hand. When you activate one of Shallan's mana abilities, you may cast a spell
exiled by her without paying its mana cost.
{u}{b}: Shallan gains the Surgebinder creature type,
"{w}: Regenerate Shallan Davar," and "{r}{t}: Destroy target artifact. Its controller gets a treasure token."
{u}{b}: Shallan gains +2/+2 and "{u}{t}: Create a
token that's a copy of another creature
except it cannot deal damage."