Overwhelmed Arcanist's Owl

Flying
When Overwhelmed Arcanist's Owl
enters the battlefield, you may look
at the top four cards of target opponents library.
You may reveal an artifact
card from among of them and put it
on the top of your library. Put the rest
cards into their graveyard
"Once upon a time an Overwhelmed Apprentice
caught an Arcanist's Owl... It was the
end of the tale."