Eclipse Purifier

First strike
Whenever a creature or planeswalker dealt
damage by Eclipse Purifier this turn dies, you
may exile it. If you do, search its owner's
graveyard, hand, and library for any number of
cards with the same name as that card and exile
them. Then that player shuffles their library.
"The dawn will come again, its radiance so bright. It
will be as if dark never existed."