Azan, Chief of the Rodents

Reach. (This creature can block creatures with flying.)
Union 2. (When Azan, Chief of the Rodents enters the battlefield, you may put two +1/+1 counter on him if you control another Rodent.)
Whenever Azan, Chief of the Rodents attacks,
put X 1/1 green Rodent tokens onto the battlefield tapped and attacking for each Rodent creature you control.