Kato Danzo

Ninjutsu {w/b}{u} ({w/b}{u}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Kato Danzo deals combat damage to
a player, reveal the top card of your library and
put that card into your hand. You gain life equal
to its converted mana cost.
"I didn't have free will when I lived, but now, I think
I might try to feel and be more human."