Kenja, Kami of Law

When Kenja, Kami of Law enters the battlefield,
exile target artifact or enchantment until it leaves
the battlefield.
Whenever you cast a white spell, draw a card.
Then you may shuffle a nonland card from exile
into its owner's library
{x}{w}{w}, {t}: Exile target nonland permanent with converted mana cost X until Kenja, Kami of Law leaves the battlefield.