Aeliza, Seeress of Storms

Aeliza commands the elements of all storms.
Aeliza stays in battlefield.
{t}A target player must reveal their next 12 library cards.
Then reveal 6 cards from their hand.
They do not shuffle their library. Aeliza exiles 1.
Aeliza adds +0/+12 to one creature for 12 turns.