Windows 7

When Windows 7 enters the battlefield exile all creatures.
{1}{w}: Exile target attacking creature.
{u}: Return all cards exiled with windows to their owners hands
{1}{b}: Exile target players graveyard.
{2}{r}: Search your library for a non-land
non-creature card and exile it.
{2}{g}: Search your library for a land and a creature card, exile them under Windows 10.