i dont care about creep tumors all that much to be honest.
I died a little inside just now. Now I understand why all zerg players complain a lot.
I'm a protoss player, so I'm not entirely sure why creep is such a big deal?
causes all Zerg units, excluding air units and Drones, to move faster when traveling over it. The increase is 30%, barring the Queen (170%), Hydralisk (50%), Spine Crawler, and Spore Crawler (150%).
The fastest units attack first in a battle, so 1 regular zergling vs 1 speedling, speedling wins.
So this also increases damage. It also lets your units get a better concave.
It also gives vision of the area.