Wukongopterid

Low-flying (A low-flying creature has flying
but may attack as though it didn't have flying.)

When Wukongopterid deals combat damage to
a player, if it wasn't flying, you may sacrifice
it, pay {b}, and discard a card. When you do,
return another target creature card from your
graveyard to the battlefield, you lose life equal
to it's mana value.