Nippon, the Sun's Origin

Vigilance, Haste
Whenever a non-token creature you control attacks,
you may look at the top card of your library. If it
shares a creature type with the attacking creature,
you may reveal it and put it into your hand. If you
don't put it into your hand, you may put it into
your graveyard.
Whenever a non-token creature you control dies, you
may return a creature with lesser mana value from
your graveyard to your hand.