Sesquinae, Mind Reaver

Flying, lifelink, hexproof, mindprobe 3
{1}{u}: Tap or untap target creature.
{2}{u}{b}: Exile target creature previously
(un)tapped by Sesquinae, Mind Reaver, then
place it on the battlefield under your control.
{3}{u}{b}, exile the top card of your library: Exile
the top 15 cards of target player's library.
"Your mind is a mere plaything to me."