Tesseract

You may cast creature-spells as though they
had flash.
{u}{t}: You may play an additional land this turn.
{2}{u}{t}: Return target creature to its owners hand.
{3}{u}{t}: Target player shuffles target creature
they control into their library.
{10}{u}{u}: Return target creature you own to your hand, then all players shuffle all creatures they own into their libraries.