Orphan of Koz

Flying, Haste, Vigilance, Double Strike
Insight 1 (This creature is unblockable unless
defending player exiles one of any combination of
instant, sorcery or enchantments from its graveyard.)
Whenever Orphan of Koz deals combat damage
to a player you may exile a card from their library,
if you do gain 2 life and draw a card.

"Mercy for the poor wizened child, mercy."