Swirl of the Root

When Swirl of the Root enters the battlefield,
exile all cards from all graveyards.
If a card or token would be put into a graveyard
from anywhere, exile it instead.
Aoko believes that it is possible those who end up there "become God" in a sense, so there is no reason for
them to come back. It is also possible they cannot come
back because "being God" isn't truly such a wondrous
event as humans may think.