Marick, Abominable Were-rat

When this card transforms into Marick,
Abominable Were-rat, make 5 black 1/1 Rat
tokens with deathtouch.
Marick, Abominable Were-rat's Power is equal
to the number of Rats you control.
When you control no Rats, transform Marick, Abominable Were-rat.
{b}{r}{g}, {t}: For each Rat and Were-rat you
control, make a black 1/1 Rat token
with deathtouch.