Flighty Sanguisuge

{t}: Exile Flighty Sanguisuge. Create X 1/1 black
bat creature tokens with flying and haste named
Sanguisuge Bat where X is Flighty Sanguisuge's
power. You may activate this ability any time you
could cast an instant.
{w/b}: Sacrifice each creature you control named
Sanguisuge Bat. Return Flighty Sanguisuge to the
battlefield with base power and toughness equal
to the number of cards sacrificed this way.