Vortex of Knowledge

At the beginning of the end step, exile Vortex of Knowledge. Activate each of its abilities
only once.
{u}: Return up to two target nonland permanents
to their owner's hands.
{1}{u}: Draw three cards.
{u}{u}{u}: Return up to two target instant cards
from your graveyard to your hand.
{u}{u}{u}{u}: All lands become islands until
your next turn.