Blood Eel

When this creature transforms into Blood
Eel, Syphon (You may remove any number of +1/+1
counters from any creature. Create a blood token for
every counter removed this way.)
Sacrifice 3 blood tokens, {t}: Search your library
for a card that mentions Blood Moon, add it to
your hand, then shuffle your library.
If Blood Moon is not on the Battlefield,
transform Blood Eel.