Senta the Screeching Witch

You may look at the top card of your library at
any time. You may cast Bird and Cat spells from
the top of your library. (Timing rules still apply.)
At the start of each turn, you may reveal the top
card of your library. If a creature card is revealed
this way, Senta the Screeching Witch becomes a
copy of revealed creature until end of turn. Then
put the revealed card into your graveyard.
"Just another fledgling for my collection."