Cursed Blood-Fang

If it's nether day nor night, it becomes night as
Cursed Blood-Fang enters the battlefield.
As long as it's day, Cursed Blood-Fang gets -3/-3.
When Cursed Blood-Fang dies, return it to
the battlefield transformed under your control attached to target creature. If it's night, also
create a token that's a copy of Cursed Blood-
Fang transformed attached to another target
creature.