Gifts of the Chasm Goddess

Untap target nonland permanent you control. If
it's blue, create a token that's a copy of it. Then,
target player mills X cards, where X is equal to
the number of tokens you control. (They put the
top X cards of their library into their graveyard.)
Overload {4}{u}{u}{u}{u} (You may cast this spell for
its overload cost. If you do, change ''target'' in its text
to ''each.'')