Insect goliath

virus (All creatures you control gain abilities of this creature. All creatures gain +1 +1 counters on this creature, also they retain -1 -1 counters.)
When this creature enters the battlefield choose one:
-This creature enters the battlefield with X +1 +1 counters.
-Your opponent gains X poison counters, also this creature gains infect and flying.
A staple in all those creepy crawly armies.