Vroszz, Rotari Warleader

This creature gets +1/+1 for each other Rat you
control.
All Rats have deathtouch.

At the beginning of your end step, create X 1/1
black Rat creature tokens, where X is the number
of creatures that left the battlefield this turn.

Ruthless in battle, it commands a legion of death, bringing forth new warriors with every fallen foe.